diff --git a/doc/classes/horstoeko-zugferd-ZugferdDocumentBuilder.html b/doc/classes/horstoeko-zugferd-ZugferdDocumentBuilder.html
index 20997760..62a0ac9d 100644
--- a/doc/classes/horstoeko-zugferd-ZugferdDocumentBuilder.html
+++ b/doc/classes/horstoeko-zugferd-ZugferdDocumentBuilder.html
@@ -297,6 +297,20 @@ <h3 id="toc">
 </dt>
 <dd>Detailed information on surcharges and discounts on item gross price</dd>
 
+            <dt class="phpdocumentor-table-of-contents__entry -method -public">
+    <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductCharacteristic">addDocumentPositionProductCharacteristic()</a>
+    <span>
+                        &nbsp;: <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a>    </span>
+</dt>
+<dd>Undocumented function</dd>
+
+            <dt class="phpdocumentor-table-of-contents__entry -method -public">
+    <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductClassification">addDocumentPositionProductClassification()</a>
+    <span>
+                        &nbsp;: <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a>    </span>
+</dt>
+<dd>Add detailed information on product classification</dd>
+
             <dt class="phpdocumentor-table-of-contents__entry -method -public">
     <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionReceivableSpecifiedTradeAccountingAccount">addDocumentPositionReceivableSpecifiedTradeAccountingAccount()</a>
     <span>
@@ -2440,7 +2454,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionAdditional
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2590</span>
+    <span class="phpdocumentor-element-found-in__line">2642</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add an additional Document reference on a position</p>
@@ -2571,7 +2585,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionAllowanceC
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3258</span>
+    <span class="phpdocumentor-element-found-in__line">3310</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add surcharges and discounts on position level</p>
@@ -2715,7 +2729,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionGrossPrice
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2659</span>
+    <span class="phpdocumentor-element-found-in__line">2711</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on surcharges and discounts on item gross price</p>
@@ -2841,6 +2855,171 @@ <h5 class="phpdocumentor-return-value__heading">Return values</h5>
             <section class="phpdocumentor-description"></section>
 
     
+</article>
+                    <article
+        class="phpdocumentor-element
+            -method
+            -public
+                                                        "
+>
+    <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionProductCharacteristic">
+        addDocumentPositionProductCharacteristic()
+        <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductCharacteristic" class="headerlink"><i class="fas fa-link"></i></a>
+    </h4>
+    <aside class="phpdocumentor-element-found-in">
+    <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
+    :
+    <span class="phpdocumentor-element-found-in__line">2530</span>
+</aside>
+
+        <p class="phpdocumentor-summary">Undocumented function</p>
+
+    <code class="phpdocumentor-code phpdocumentor-signature ">
+    <span class="phpdocumentor-signature__visibility">public</span>
+                <span class="phpdocumentor-signature__name">addDocumentPositionProductCharacteristic</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$description</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$value</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$typecode</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">float|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$valueMeasure</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$valueMeasureUnitCode</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span></code>
+
+        <section class="phpdocumentor-description"></section>
+
+        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
+    <dl class="phpdocumentor-argument-list">
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$description</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The name of the attribute or property of the article such as &quot;Colour&quot;</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$value</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The value of the attribute or property of the item such as &quot;Red&quot;</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$typecode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Type of product property (code). The codes must be taken from the
+UNTDID 6313 codelist. Available only in the Extended-Profile</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$valueMeasure</span>
+                : <span class="phpdocumentor-signature__argument__return-type">float|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Value of the product property (numerical measurand)</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$valueMeasureUnitCode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Unit of measurement of the measurand</p>
+<ul>
+<li>Codeliste: Rec. N°20 Vollständige Liste, In Recommendation N°20 Intro 2.a ist beschrieben, dass
+beide Listen kombiniert anzuwenden sind.</li>
+<li>Codeliste: Rec. N°21 Vollständige Liste, In Recommendation N°20 Intro 2.a ist beschrieben, dass
+beide Listen kombiniert anzuwenden sind.</li>
+</ul>
+</section>
+
+            </dd>
+            </dl>
+
+    
+
+        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
+    <span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span>
+            &mdash;
+            <section class="phpdocumentor-description"></section>
+
+    
+</article>
+                    <article
+        class="phpdocumentor-element
+            -method
+            -public
+                                                        "
+>
+    <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionProductClassification">
+        addDocumentPositionProductClassification()
+        <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductClassification" class="headerlink"><i class="fas fa-link"></i></a>
+    </h4>
+    <aside class="phpdocumentor-element-found-in">
+    <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
+    :
+    <span class="phpdocumentor-element-found-in__line">2554</span>
+</aside>
+
+        <p class="phpdocumentor-summary">Add detailed information on product classification</p>
+
+    <code class="phpdocumentor-code phpdocumentor-signature ">
+    <span class="phpdocumentor-signature__visibility">public</span>
+                <span class="phpdocumentor-signature__name">addDocumentPositionProductClassification</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$classCode</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$className</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$listID</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$listVersionID</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span></code>
+
+        <section class="phpdocumentor-description"></section>
+
+        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
+    <dl class="phpdocumentor-argument-list">
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$classCode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>A code for classifying the item by type or nature or essence or condition.
+<strong>Note</strong>: Classification codes are used to group similar items for different purposes, such as public
+procurement (using the Common Procurement Vocabulary [CPV]), e-commerce (UNSPSC), etc.</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$className</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Classification name</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$listID</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The identifier for the identification scheme of the identifier of the article classification
+<strong>Note</strong>: The identification scheme must be selected from the entries from UNTDID 7143.</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$listVersionID</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The version of the identification scheme</p>
+</section>
+
+            </dd>
+            </dl>
+
+    
+
+        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
+    <span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span>
+            &mdash;
+            <section class="phpdocumentor-description"></section>
+
+    
 </article>
                     <article
         class="phpdocumentor-element
@@ -2855,7 +3034,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionReceivable
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3293</span>
+    <span class="phpdocumentor-element-found-in__line">3345</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add an AccountingAccount on item level
@@ -2909,7 +3088,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionShipToGlob
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2807</span>
+    <span class="phpdocumentor-element-found-in__line">2859</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a global id for the Ship-to Trade Party</p>
@@ -2965,7 +3144,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionShipToTaxR
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2831</span>
+    <span class="phpdocumentor-element-found-in__line">2883</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add Tax registration to Ship-To Trade party</p>
@@ -3026,7 +3205,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionTax">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3165</span>
+    <span class="phpdocumentor-element-found-in__line">3217</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add information about the sales tax that applies to the goods and services invoiced
@@ -3147,7 +3326,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateCu
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2606</span>
+    <span class="phpdocumentor-element-found-in__line">2658</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a referennce to a ultimate customer order referenced document</p>
@@ -3208,7 +3387,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2952</span>
+    <span class="phpdocumentor-element-found-in__line">3004</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a global id for the Ship-to Trade Party</p>
@@ -3264,7 +3443,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2969</span>
+    <span class="phpdocumentor-element-found-in__line">3021</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add Tax registration to Ship-To Trade party</p>
@@ -6658,7 +6837,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionBillingPer
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3183</span>
+    <span class="phpdocumentor-element-found-in__line">3235</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set information about the period relevant for the invoice item.</p>
@@ -6714,7 +6893,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionBuyerOrder
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2522</span>
+    <span class="phpdocumentor-element-found-in__line">2574</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set details of the related buyer order position</p>
@@ -6779,7 +6958,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionContractRe
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2542</span>
+    <span class="phpdocumentor-element-found-in__line">2594</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set details of the related contract position</p>
@@ -6844,7 +7023,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionDeliveryNo
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3112</span>
+    <span class="phpdocumentor-element-found-in__line">3164</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated delivery note on item level</p>
@@ -6905,7 +7084,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionDespatchAd
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3080</span>
+    <span class="phpdocumentor-element-found-in__line">3132</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated shipping notification on item level</p>
@@ -6966,7 +7145,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionGrossPrice
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2627</span>
+    <span class="phpdocumentor-element-found-in__line">2679</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set the unit price excluding sales tax before deduction of the discount on the item price.</p>
@@ -7032,7 +7211,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionLineSummat
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3277</span>
+    <span class="phpdocumentor-element-found-in__line">3329</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set information on item totals</p>
@@ -7089,7 +7268,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionNetPrice">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2679</span>
+    <span class="phpdocumentor-element-found-in__line">2731</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set detailed information on the net price of the item</p>
@@ -7153,7 +7332,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionNetPriceTa
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2732</span>
+    <span class="phpdocumentor-element-found-in__line">2784</span>
 </aside>
 
         <p class="phpdocumentor-summary">Tax included for B2C on position level</p>
@@ -7434,7 +7613,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionQuantity">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2765</span>
+    <span class="phpdocumentor-element-found-in__line">2817</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set the position Quantity</p>
@@ -7532,7 +7711,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionReceivingA
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3096</span>
+    <span class="phpdocumentor-element-found-in__line">3148</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated shipping notification on item level</p>
@@ -7593,7 +7772,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipTo">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2789</span>
+    <span class="phpdocumentor-element-found-in__line">2841</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set detailed information on the different ship-to party at item level</p>
@@ -7661,7 +7840,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToAddr
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2864</span>
+    <span class="phpdocumentor-element-found-in__line">2916</span>
 </aside>
 
         <p class="phpdocumentor-summary">Sets the postal address of the Ship-To party</p>
@@ -7766,7 +7945,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToCont
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2911</span>
+    <span class="phpdocumentor-element-found-in__line">2963</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set contact of the Ship-To party</p>
@@ -7848,7 +8027,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToLega
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2887</span>
+    <span class="phpdocumentor-element-found-in__line">2939</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set legal organisation of the Ship-To party on item level</p>
@@ -7916,7 +8095,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionSupplyChai
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3064</span>
+    <span class="phpdocumentor-element-found-in__line">3116</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the actual delivery on item level</p>
@@ -7961,7 +8140,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2934</span>
+    <span class="phpdocumentor-element-found-in__line">2986</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the different end recipient</p>
@@ -8028,7 +8207,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3002</span>
+    <span class="phpdocumentor-element-found-in__line">3054</span>
 </aside>
 
         <p class="phpdocumentor-summary">Sets the postal address of the Ship-To party</p>
@@ -8133,7 +8312,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3049</span>
+    <span class="phpdocumentor-element-found-in__line">3101</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set contact of the Ship-To party</p>
@@ -8215,7 +8394,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3025</span>
+    <span class="phpdocumentor-element-found-in__line">3077</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set legal organisation of the Ship-To party</p>
diff --git a/doc/classes/horstoeko-zugferd-ZugferdDocumentBuilderWithCalculator.html b/doc/classes/horstoeko-zugferd-ZugferdDocumentBuilderWithCalculator.html
index e31ec5af..e544ace1 100644
--- a/doc/classes/horstoeko-zugferd-ZugferdDocumentBuilderWithCalculator.html
+++ b/doc/classes/horstoeko-zugferd-ZugferdDocumentBuilderWithCalculator.html
@@ -298,6 +298,20 @@ <h3 id="toc">
 </dt>
 <dd>Detailed information on surcharges and discounts on item gross price</dd>
 
+            <dt class="phpdocumentor-table-of-contents__entry -method -public">
+    <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductCharacteristic">addDocumentPositionProductCharacteristic()</a>
+    <span>
+                        &nbsp;: <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a>    </span>
+</dt>
+<dd>Undocumented function</dd>
+
+            <dt class="phpdocumentor-table-of-contents__entry -method -public">
+    <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductClassification">addDocumentPositionProductClassification()</a>
+    <span>
+                        &nbsp;: <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a>    </span>
+</dt>
+<dd>Add detailed information on product classification</dd>
+
             <dt class="phpdocumentor-table-of-contents__entry -method -public">
     <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionReceivableSpecifiedTradeAccountingAccount">addDocumentPositionReceivableSpecifiedTradeAccountingAccount()</a>
     <span>
@@ -2470,7 +2484,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionAdditional
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2590</span>
+    <span class="phpdocumentor-element-found-in__line">2642</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add an additional Document reference on a position</p>
@@ -2601,7 +2615,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionAllowanceC
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3258</span>
+    <span class="phpdocumentor-element-found-in__line">3310</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add surcharges and discounts on position level</p>
@@ -2745,7 +2759,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionGrossPrice
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2659</span>
+    <span class="phpdocumentor-element-found-in__line">2711</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on surcharges and discounts on item gross price</p>
@@ -2871,6 +2885,171 @@ <h5 class="phpdocumentor-return-value__heading">Return values</h5>
             <section class="phpdocumentor-description"></section>
 
     
+</article>
+                    <article
+        class="phpdocumentor-element
+            -method
+            -public
+                                                        "
+>
+    <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionProductCharacteristic">
+        addDocumentPositionProductCharacteristic()
+        <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductCharacteristic" class="headerlink"><i class="fas fa-link"></i></a>
+    </h4>
+    <aside class="phpdocumentor-element-found-in">
+    <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
+    :
+    <span class="phpdocumentor-element-found-in__line">2530</span>
+</aside>
+
+        <p class="phpdocumentor-summary">Undocumented function</p>
+
+    <code class="phpdocumentor-code phpdocumentor-signature ">
+    <span class="phpdocumentor-signature__visibility">public</span>
+                <span class="phpdocumentor-signature__name">addDocumentPositionProductCharacteristic</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$description</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$value</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$typecode</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">float|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$valueMeasure</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$valueMeasureUnitCode</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span></code>
+
+        <section class="phpdocumentor-description"></section>
+
+        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
+    <dl class="phpdocumentor-argument-list">
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$description</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The name of the attribute or property of the article such as &quot;Colour&quot;</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$value</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The value of the attribute or property of the item such as &quot;Red&quot;</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$typecode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Type of product property (code). The codes must be taken from the
+UNTDID 6313 codelist. Available only in the Extended-Profile</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$valueMeasure</span>
+                : <span class="phpdocumentor-signature__argument__return-type">float|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Value of the product property (numerical measurand)</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$valueMeasureUnitCode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Unit of measurement of the measurand</p>
+<ul>
+<li>Codeliste: Rec. N°20 Vollständige Liste, In Recommendation N°20 Intro 2.a ist beschrieben, dass
+beide Listen kombiniert anzuwenden sind.</li>
+<li>Codeliste: Rec. N°21 Vollständige Liste, In Recommendation N°20 Intro 2.a ist beschrieben, dass
+beide Listen kombiniert anzuwenden sind.</li>
+</ul>
+</section>
+
+            </dd>
+            </dl>
+
+    
+
+        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
+    <span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span>
+            &mdash;
+            <section class="phpdocumentor-description"></section>
+
+    
+</article>
+                    <article
+        class="phpdocumentor-element
+            -method
+            -public
+                                                        "
+>
+    <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionProductClassification">
+        addDocumentPositionProductClassification()
+        <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductClassification" class="headerlink"><i class="fas fa-link"></i></a>
+    </h4>
+    <aside class="phpdocumentor-element-found-in">
+    <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
+    :
+    <span class="phpdocumentor-element-found-in__line">2554</span>
+</aside>
+
+        <p class="phpdocumentor-summary">Add detailed information on product classification</p>
+
+    <code class="phpdocumentor-code phpdocumentor-signature ">
+    <span class="phpdocumentor-signature__visibility">public</span>
+                <span class="phpdocumentor-signature__name">addDocumentPositionProductClassification</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$classCode</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$className</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$listID</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$listVersionID</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span></code>
+
+        <section class="phpdocumentor-description"></section>
+
+        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
+    <dl class="phpdocumentor-argument-list">
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$classCode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>A code for classifying the item by type or nature or essence or condition.
+<strong>Note</strong>: Classification codes are used to group similar items for different purposes, such as public
+procurement (using the Common Procurement Vocabulary [CPV]), e-commerce (UNSPSC), etc.</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$className</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Classification name</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$listID</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The identifier for the identification scheme of the identifier of the article classification
+<strong>Note</strong>: The identification scheme must be selected from the entries from UNTDID 7143.</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$listVersionID</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The version of the identification scheme</p>
+</section>
+
+            </dd>
+            </dl>
+
+    
+
+        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
+    <span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span>
+            &mdash;
+            <section class="phpdocumentor-description"></section>
+
+    
 </article>
                     <article
         class="phpdocumentor-element
@@ -2885,7 +3064,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionReceivable
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3293</span>
+    <span class="phpdocumentor-element-found-in__line">3345</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add an AccountingAccount on item level
@@ -2939,7 +3118,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionShipToGlob
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2807</span>
+    <span class="phpdocumentor-element-found-in__line">2859</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a global id for the Ship-to Trade Party</p>
@@ -2995,7 +3174,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionShipToTaxR
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2831</span>
+    <span class="phpdocumentor-element-found-in__line">2883</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add Tax registration to Ship-To Trade party</p>
@@ -3056,7 +3235,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionTax">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3165</span>
+    <span class="phpdocumentor-element-found-in__line">3217</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add information about the sales tax that applies to the goods and services invoiced
@@ -3177,7 +3356,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateCu
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2606</span>
+    <span class="phpdocumentor-element-found-in__line">2658</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a referennce to a ultimate customer order referenced document</p>
@@ -3238,7 +3417,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2952</span>
+    <span class="phpdocumentor-element-found-in__line">3004</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a global id for the Ship-to Trade Party</p>
@@ -3294,7 +3473,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2969</span>
+    <span class="phpdocumentor-element-found-in__line">3021</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add Tax registration to Ship-To Trade party</p>
@@ -6833,7 +7012,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionBillingPer
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3183</span>
+    <span class="phpdocumentor-element-found-in__line">3235</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set information about the period relevant for the invoice item.</p>
@@ -6889,7 +7068,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionBuyerOrder
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2522</span>
+    <span class="phpdocumentor-element-found-in__line">2574</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set details of the related buyer order position</p>
@@ -6954,7 +7133,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionContractRe
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2542</span>
+    <span class="phpdocumentor-element-found-in__line">2594</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set details of the related contract position</p>
@@ -7019,7 +7198,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionDeliveryNo
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3112</span>
+    <span class="phpdocumentor-element-found-in__line">3164</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated delivery note on item level</p>
@@ -7080,7 +7259,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionDespatchAd
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3080</span>
+    <span class="phpdocumentor-element-found-in__line">3132</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated shipping notification on item level</p>
@@ -7141,7 +7320,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionGrossPrice
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2627</span>
+    <span class="phpdocumentor-element-found-in__line">2679</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set the unit price excluding sales tax before deduction of the discount on the item price.</p>
@@ -7207,7 +7386,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionLineSummat
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3277</span>
+    <span class="phpdocumentor-element-found-in__line">3329</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set information on item totals</p>
@@ -7264,7 +7443,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionNetPrice">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2679</span>
+    <span class="phpdocumentor-element-found-in__line">2731</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set detailed information on the net price of the item</p>
@@ -7328,7 +7507,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionNetPriceTa
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2732</span>
+    <span class="phpdocumentor-element-found-in__line">2784</span>
 </aside>
 
         <p class="phpdocumentor-summary">Tax included for B2C on position level</p>
@@ -7609,7 +7788,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionQuantity">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2765</span>
+    <span class="phpdocumentor-element-found-in__line">2817</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set the position Quantity</p>
@@ -7707,7 +7886,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionReceivingA
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3096</span>
+    <span class="phpdocumentor-element-found-in__line">3148</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated shipping notification on item level</p>
@@ -7768,7 +7947,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipTo">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2789</span>
+    <span class="phpdocumentor-element-found-in__line">2841</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set detailed information on the different ship-to party at item level</p>
@@ -7836,7 +8015,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToAddr
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2864</span>
+    <span class="phpdocumentor-element-found-in__line">2916</span>
 </aside>
 
         <p class="phpdocumentor-summary">Sets the postal address of the Ship-To party</p>
@@ -7941,7 +8120,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToCont
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2911</span>
+    <span class="phpdocumentor-element-found-in__line">2963</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set contact of the Ship-To party</p>
@@ -8023,7 +8202,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToLega
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2887</span>
+    <span class="phpdocumentor-element-found-in__line">2939</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set legal organisation of the Ship-To party on item level</p>
@@ -8091,7 +8270,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionSupplyChai
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3064</span>
+    <span class="phpdocumentor-element-found-in__line">3116</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the actual delivery on item level</p>
@@ -8136,7 +8315,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2934</span>
+    <span class="phpdocumentor-element-found-in__line">2986</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the different end recipient</p>
@@ -8203,7 +8382,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3002</span>
+    <span class="phpdocumentor-element-found-in__line">3054</span>
 </aside>
 
         <p class="phpdocumentor-summary">Sets the postal address of the Ship-To party</p>
@@ -8308,7 +8487,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3049</span>
+    <span class="phpdocumentor-element-found-in__line">3101</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set contact of the Ship-To party</p>
@@ -8390,7 +8569,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3025</span>
+    <span class="phpdocumentor-element-found-in__line">3077</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set legal organisation of the Ship-To party</p>
diff --git a/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptor.html b/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptor.html
index 8b86971a..bacf592d 100644
--- a/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptor.html
+++ b/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptor.html
@@ -302,6 +302,20 @@ <h3 id="toc">
 </dt>
 <dd>Detailed information on surcharges and discounts on item gross price</dd>
 
+            <dt class="phpdocumentor-table-of-contents__entry -method -public">
+    <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductCharacteristic">addDocumentPositionProductCharacteristic()</a>
+    <span>
+                        &nbsp;: <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a>    </span>
+</dt>
+<dd>Undocumented function</dd>
+
+            <dt class="phpdocumentor-table-of-contents__entry -method -public">
+    <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductClassification">addDocumentPositionProductClassification()</a>
+    <span>
+                        &nbsp;: <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a>    </span>
+</dt>
+<dd>Add detailed information on product classification</dd>
+
             <dt class="phpdocumentor-table-of-contents__entry -method -public">
     <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionReceivableSpecifiedTradeAccountingAccount">addDocumentPositionReceivableSpecifiedTradeAccountingAccount()</a>
     <span>
@@ -2657,7 +2671,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionAdditional
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2590</span>
+    <span class="phpdocumentor-element-found-in__line">2642</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add an additional Document reference on a position</p>
@@ -2788,7 +2802,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionAllowanceC
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3258</span>
+    <span class="phpdocumentor-element-found-in__line">3310</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add surcharges and discounts on position level</p>
@@ -2932,7 +2946,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionGrossPrice
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2659</span>
+    <span class="phpdocumentor-element-found-in__line">2711</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on surcharges and discounts on item gross price</p>
@@ -3058,6 +3072,171 @@ <h5 class="phpdocumentor-return-value__heading">Return values</h5>
             <section class="phpdocumentor-description"></section>
 
     
+</article>
+                    <article
+        class="phpdocumentor-element
+            -method
+            -public
+                                                        "
+>
+    <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionProductCharacteristic">
+        addDocumentPositionProductCharacteristic()
+        <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductCharacteristic" class="headerlink"><i class="fas fa-link"></i></a>
+    </h4>
+    <aside class="phpdocumentor-element-found-in">
+    <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
+    :
+    <span class="phpdocumentor-element-found-in__line">2530</span>
+</aside>
+
+        <p class="phpdocumentor-summary">Undocumented function</p>
+
+    <code class="phpdocumentor-code phpdocumentor-signature ">
+    <span class="phpdocumentor-signature__visibility">public</span>
+                <span class="phpdocumentor-signature__name">addDocumentPositionProductCharacteristic</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$description</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$value</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$typecode</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">float|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$valueMeasure</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$valueMeasureUnitCode</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span></code>
+
+        <section class="phpdocumentor-description"></section>
+
+        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
+    <dl class="phpdocumentor-argument-list">
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$description</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The name of the attribute or property of the article such as &quot;Colour&quot;</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$value</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The value of the attribute or property of the item such as &quot;Red&quot;</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$typecode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Type of product property (code). The codes must be taken from the
+UNTDID 6313 codelist. Available only in the Extended-Profile</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$valueMeasure</span>
+                : <span class="phpdocumentor-signature__argument__return-type">float|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Value of the product property (numerical measurand)</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$valueMeasureUnitCode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Unit of measurement of the measurand</p>
+<ul>
+<li>Codeliste: Rec. N°20 Vollständige Liste, In Recommendation N°20 Intro 2.a ist beschrieben, dass
+beide Listen kombiniert anzuwenden sind.</li>
+<li>Codeliste: Rec. N°21 Vollständige Liste, In Recommendation N°20 Intro 2.a ist beschrieben, dass
+beide Listen kombiniert anzuwenden sind.</li>
+</ul>
+</section>
+
+            </dd>
+            </dl>
+
+    
+
+        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
+    <span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span>
+            &mdash;
+            <section class="phpdocumentor-description"></section>
+
+    
+</article>
+                    <article
+        class="phpdocumentor-element
+            -method
+            -public
+                                                        "
+>
+    <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionProductClassification">
+        addDocumentPositionProductClassification()
+        <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductClassification" class="headerlink"><i class="fas fa-link"></i></a>
+    </h4>
+    <aside class="phpdocumentor-element-found-in">
+    <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
+    :
+    <span class="phpdocumentor-element-found-in__line">2554</span>
+</aside>
+
+        <p class="phpdocumentor-summary">Add detailed information on product classification</p>
+
+    <code class="phpdocumentor-code phpdocumentor-signature ">
+    <span class="phpdocumentor-signature__visibility">public</span>
+                <span class="phpdocumentor-signature__name">addDocumentPositionProductClassification</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$classCode</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$className</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$listID</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$listVersionID</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span></code>
+
+        <section class="phpdocumentor-description"></section>
+
+        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
+    <dl class="phpdocumentor-argument-list">
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$classCode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>A code for classifying the item by type or nature or essence or condition.
+<strong>Note</strong>: Classification codes are used to group similar items for different purposes, such as public
+procurement (using the Common Procurement Vocabulary [CPV]), e-commerce (UNSPSC), etc.</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$className</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Classification name</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$listID</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The identifier for the identification scheme of the identifier of the article classification
+<strong>Note</strong>: The identification scheme must be selected from the entries from UNTDID 7143.</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$listVersionID</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The version of the identification scheme</p>
+</section>
+
+            </dd>
+            </dl>
+
+    
+
+        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
+    <span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span>
+            &mdash;
+            <section class="phpdocumentor-description"></section>
+
+    
 </article>
                     <article
         class="phpdocumentor-element
@@ -3072,7 +3251,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionReceivable
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3293</span>
+    <span class="phpdocumentor-element-found-in__line">3345</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add an AccountingAccount on item level
@@ -3126,7 +3305,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionShipToGlob
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2807</span>
+    <span class="phpdocumentor-element-found-in__line">2859</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a global id for the Ship-to Trade Party</p>
@@ -3182,7 +3361,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionShipToTaxR
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2831</span>
+    <span class="phpdocumentor-element-found-in__line">2883</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add Tax registration to Ship-To Trade party</p>
@@ -3243,7 +3422,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionTax">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3165</span>
+    <span class="phpdocumentor-element-found-in__line">3217</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add information about the sales tax that applies to the goods and services invoiced
@@ -3364,7 +3543,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateCu
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2606</span>
+    <span class="phpdocumentor-element-found-in__line">2658</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a referennce to a ultimate customer order referenced document</p>
@@ -3425,7 +3604,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2952</span>
+    <span class="phpdocumentor-element-found-in__line">3004</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a global id for the Ship-to Trade Party</p>
@@ -3481,7 +3660,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2969</span>
+    <span class="phpdocumentor-element-found-in__line">3021</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add Tax registration to Ship-To Trade party</p>
@@ -9435,7 +9614,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionBillingPer
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3183</span>
+    <span class="phpdocumentor-element-found-in__line">3235</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set information about the period relevant for the invoice item.</p>
@@ -9491,7 +9670,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionBuyerOrder
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2522</span>
+    <span class="phpdocumentor-element-found-in__line">2574</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set details of the related buyer order position</p>
@@ -9556,7 +9735,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionContractRe
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2542</span>
+    <span class="phpdocumentor-element-found-in__line">2594</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set details of the related contract position</p>
@@ -9621,7 +9800,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionDeliveryNo
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3112</span>
+    <span class="phpdocumentor-element-found-in__line">3164</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated delivery note on item level</p>
@@ -9682,7 +9861,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionDespatchAd
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3080</span>
+    <span class="phpdocumentor-element-found-in__line">3132</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated shipping notification on item level</p>
@@ -9743,7 +9922,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionGrossPrice
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2627</span>
+    <span class="phpdocumentor-element-found-in__line">2679</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set the unit price excluding sales tax before deduction of the discount on the item price.</p>
@@ -9809,7 +9988,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionLineSummat
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3277</span>
+    <span class="phpdocumentor-element-found-in__line">3329</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set information on item totals</p>
@@ -9866,7 +10045,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionNetPrice">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2679</span>
+    <span class="phpdocumentor-element-found-in__line">2731</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set detailed information on the net price of the item</p>
@@ -9930,7 +10109,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionNetPriceTa
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2732</span>
+    <span class="phpdocumentor-element-found-in__line">2784</span>
 </aside>
 
         <p class="phpdocumentor-summary">Tax included for B2C on position level</p>
@@ -10211,7 +10390,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionQuantity">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2765</span>
+    <span class="phpdocumentor-element-found-in__line">2817</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set the position Quantity</p>
@@ -10309,7 +10488,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionReceivingA
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3096</span>
+    <span class="phpdocumentor-element-found-in__line">3148</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated shipping notification on item level</p>
@@ -10370,7 +10549,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipTo">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2789</span>
+    <span class="phpdocumentor-element-found-in__line">2841</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set detailed information on the different ship-to party at item level</p>
@@ -10438,7 +10617,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToAddr
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2864</span>
+    <span class="phpdocumentor-element-found-in__line">2916</span>
 </aside>
 
         <p class="phpdocumentor-summary">Sets the postal address of the Ship-To party</p>
@@ -10543,7 +10722,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToCont
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2911</span>
+    <span class="phpdocumentor-element-found-in__line">2963</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set contact of the Ship-To party</p>
@@ -10625,7 +10804,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToLega
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2887</span>
+    <span class="phpdocumentor-element-found-in__line">2939</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set legal organisation of the Ship-To party on item level</p>
@@ -10693,7 +10872,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionSupplyChai
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3064</span>
+    <span class="phpdocumentor-element-found-in__line">3116</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the actual delivery on item level</p>
@@ -10738,7 +10917,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2934</span>
+    <span class="phpdocumentor-element-found-in__line">2986</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the different end recipient</p>
@@ -10805,7 +10984,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3002</span>
+    <span class="phpdocumentor-element-found-in__line">3054</span>
 </aside>
 
         <p class="phpdocumentor-summary">Sets the postal address of the Ship-To party</p>
@@ -10910,7 +11089,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3049</span>
+    <span class="phpdocumentor-element-found-in__line">3101</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set contact of the Ship-To party</p>
@@ -10992,7 +11171,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3025</span>
+    <span class="phpdocumentor-element-found-in__line">3077</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set legal organisation of the Ship-To party</p>
diff --git a/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptorEn16931.html b/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptorEn16931.html
index 924956b5..7011d390 100644
--- a/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptorEn16931.html
+++ b/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptorEn16931.html
@@ -272,6 +272,20 @@ <h3 id="toc">
 </dt>
 <dd>Detailed information on surcharges and discounts on item gross price</dd>
 
+            <dt class="phpdocumentor-table-of-contents__entry -method -public">
+    <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductCharacteristic">addDocumentPositionProductCharacteristic()</a>
+    <span>
+                        &nbsp;: <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a>    </span>
+</dt>
+<dd>Undocumented function</dd>
+
+            <dt class="phpdocumentor-table-of-contents__entry -method -public">
+    <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductClassification">addDocumentPositionProductClassification()</a>
+    <span>
+                        &nbsp;: <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a>    </span>
+</dt>
+<dd>Add detailed information on product classification</dd>
+
             <dt class="phpdocumentor-table-of-contents__entry -method -public">
     <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionReceivableSpecifiedTradeAccountingAccount">addDocumentPositionReceivableSpecifiedTradeAccountingAccount()</a>
     <span>
@@ -2627,7 +2641,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionAdditional
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2590</span>
+    <span class="phpdocumentor-element-found-in__line">2642</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add an additional Document reference on a position</p>
@@ -2758,7 +2772,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionAllowanceC
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3258</span>
+    <span class="phpdocumentor-element-found-in__line">3310</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add surcharges and discounts on position level</p>
@@ -2902,7 +2916,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionGrossPrice
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2659</span>
+    <span class="phpdocumentor-element-found-in__line">2711</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on surcharges and discounts on item gross price</p>
@@ -3028,6 +3042,171 @@ <h5 class="phpdocumentor-return-value__heading">Return values</h5>
             <section class="phpdocumentor-description"></section>
 
     
+</article>
+                    <article
+        class="phpdocumentor-element
+            -method
+            -public
+                                                        "
+>
+    <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionProductCharacteristic">
+        addDocumentPositionProductCharacteristic()
+        <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductCharacteristic" class="headerlink"><i class="fas fa-link"></i></a>
+    </h4>
+    <aside class="phpdocumentor-element-found-in">
+    <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
+    :
+    <span class="phpdocumentor-element-found-in__line">2530</span>
+</aside>
+
+        <p class="phpdocumentor-summary">Undocumented function</p>
+
+    <code class="phpdocumentor-code phpdocumentor-signature ">
+    <span class="phpdocumentor-signature__visibility">public</span>
+                <span class="phpdocumentor-signature__name">addDocumentPositionProductCharacteristic</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$description</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$value</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$typecode</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">float|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$valueMeasure</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$valueMeasureUnitCode</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span></code>
+
+        <section class="phpdocumentor-description"></section>
+
+        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
+    <dl class="phpdocumentor-argument-list">
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$description</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The name of the attribute or property of the article such as &quot;Colour&quot;</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$value</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The value of the attribute or property of the item such as &quot;Red&quot;</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$typecode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Type of product property (code). The codes must be taken from the
+UNTDID 6313 codelist. Available only in the Extended-Profile</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$valueMeasure</span>
+                : <span class="phpdocumentor-signature__argument__return-type">float|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Value of the product property (numerical measurand)</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$valueMeasureUnitCode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Unit of measurement of the measurand</p>
+<ul>
+<li>Codeliste: Rec. N°20 Vollständige Liste, In Recommendation N°20 Intro 2.a ist beschrieben, dass
+beide Listen kombiniert anzuwenden sind.</li>
+<li>Codeliste: Rec. N°21 Vollständige Liste, In Recommendation N°20 Intro 2.a ist beschrieben, dass
+beide Listen kombiniert anzuwenden sind.</li>
+</ul>
+</section>
+
+            </dd>
+            </dl>
+
+    
+
+        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
+    <span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span>
+            &mdash;
+            <section class="phpdocumentor-description"></section>
+
+    
+</article>
+                    <article
+        class="phpdocumentor-element
+            -method
+            -public
+                                                        "
+>
+    <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionProductClassification">
+        addDocumentPositionProductClassification()
+        <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductClassification" class="headerlink"><i class="fas fa-link"></i></a>
+    </h4>
+    <aside class="phpdocumentor-element-found-in">
+    <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
+    :
+    <span class="phpdocumentor-element-found-in__line">2554</span>
+</aside>
+
+        <p class="phpdocumentor-summary">Add detailed information on product classification</p>
+
+    <code class="phpdocumentor-code phpdocumentor-signature ">
+    <span class="phpdocumentor-signature__visibility">public</span>
+                <span class="phpdocumentor-signature__name">addDocumentPositionProductClassification</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$classCode</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$className</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$listID</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$listVersionID</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span></code>
+
+        <section class="phpdocumentor-description"></section>
+
+        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
+    <dl class="phpdocumentor-argument-list">
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$classCode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>A code for classifying the item by type or nature or essence or condition.
+<strong>Note</strong>: Classification codes are used to group similar items for different purposes, such as public
+procurement (using the Common Procurement Vocabulary [CPV]), e-commerce (UNSPSC), etc.</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$className</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Classification name</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$listID</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The identifier for the identification scheme of the identifier of the article classification
+<strong>Note</strong>: The identification scheme must be selected from the entries from UNTDID 7143.</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$listVersionID</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The version of the identification scheme</p>
+</section>
+
+            </dd>
+            </dl>
+
+    
+
+        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
+    <span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span>
+            &mdash;
+            <section class="phpdocumentor-description"></section>
+
+    
 </article>
                     <article
         class="phpdocumentor-element
@@ -3042,7 +3221,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionReceivable
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3293</span>
+    <span class="phpdocumentor-element-found-in__line">3345</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add an AccountingAccount on item level
@@ -3096,7 +3275,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionShipToGlob
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2807</span>
+    <span class="phpdocumentor-element-found-in__line">2859</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a global id for the Ship-to Trade Party</p>
@@ -3152,7 +3331,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionShipToTaxR
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2831</span>
+    <span class="phpdocumentor-element-found-in__line">2883</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add Tax registration to Ship-To Trade party</p>
@@ -3213,7 +3392,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionTax">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3165</span>
+    <span class="phpdocumentor-element-found-in__line">3217</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add information about the sales tax that applies to the goods and services invoiced
@@ -3334,7 +3513,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateCu
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2606</span>
+    <span class="phpdocumentor-element-found-in__line">2658</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a referennce to a ultimate customer order referenced document</p>
@@ -3395,7 +3574,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2952</span>
+    <span class="phpdocumentor-element-found-in__line">3004</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a global id for the Ship-to Trade Party</p>
@@ -3451,7 +3630,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2969</span>
+    <span class="phpdocumentor-element-found-in__line">3021</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add Tax registration to Ship-To Trade party</p>
@@ -9405,7 +9584,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionBillingPer
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3183</span>
+    <span class="phpdocumentor-element-found-in__line">3235</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set information about the period relevant for the invoice item.</p>
@@ -9461,7 +9640,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionBuyerOrder
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2522</span>
+    <span class="phpdocumentor-element-found-in__line">2574</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set details of the related buyer order position</p>
@@ -9526,7 +9705,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionContractRe
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2542</span>
+    <span class="phpdocumentor-element-found-in__line">2594</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set details of the related contract position</p>
@@ -9591,7 +9770,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionDeliveryNo
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3112</span>
+    <span class="phpdocumentor-element-found-in__line">3164</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated delivery note on item level</p>
@@ -9652,7 +9831,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionDespatchAd
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3080</span>
+    <span class="phpdocumentor-element-found-in__line">3132</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated shipping notification on item level</p>
@@ -9713,7 +9892,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionGrossPrice
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2627</span>
+    <span class="phpdocumentor-element-found-in__line">2679</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set the unit price excluding sales tax before deduction of the discount on the item price.</p>
@@ -9779,7 +9958,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionLineSummat
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3277</span>
+    <span class="phpdocumentor-element-found-in__line">3329</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set information on item totals</p>
@@ -9836,7 +10015,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionNetPrice">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2679</span>
+    <span class="phpdocumentor-element-found-in__line">2731</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set detailed information on the net price of the item</p>
@@ -9900,7 +10079,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionNetPriceTa
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2732</span>
+    <span class="phpdocumentor-element-found-in__line">2784</span>
 </aside>
 
         <p class="phpdocumentor-summary">Tax included for B2C on position level</p>
@@ -10181,7 +10360,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionQuantity">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2765</span>
+    <span class="phpdocumentor-element-found-in__line">2817</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set the position Quantity</p>
@@ -10279,7 +10458,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionReceivingA
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3096</span>
+    <span class="phpdocumentor-element-found-in__line">3148</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated shipping notification on item level</p>
@@ -10340,7 +10519,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipTo">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2789</span>
+    <span class="phpdocumentor-element-found-in__line">2841</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set detailed information on the different ship-to party at item level</p>
@@ -10408,7 +10587,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToAddr
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2864</span>
+    <span class="phpdocumentor-element-found-in__line">2916</span>
 </aside>
 
         <p class="phpdocumentor-summary">Sets the postal address of the Ship-To party</p>
@@ -10513,7 +10692,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToCont
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2911</span>
+    <span class="phpdocumentor-element-found-in__line">2963</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set contact of the Ship-To party</p>
@@ -10595,7 +10774,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToLega
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2887</span>
+    <span class="phpdocumentor-element-found-in__line">2939</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set legal organisation of the Ship-To party on item level</p>
@@ -10663,7 +10842,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionSupplyChai
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3064</span>
+    <span class="phpdocumentor-element-found-in__line">3116</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the actual delivery on item level</p>
@@ -10708,7 +10887,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2934</span>
+    <span class="phpdocumentor-element-found-in__line">2986</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the different end recipient</p>
@@ -10775,7 +10954,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3002</span>
+    <span class="phpdocumentor-element-found-in__line">3054</span>
 </aside>
 
         <p class="phpdocumentor-summary">Sets the postal address of the Ship-To party</p>
@@ -10880,7 +11059,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3049</span>
+    <span class="phpdocumentor-element-found-in__line">3101</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set contact of the Ship-To party</p>
@@ -10962,7 +11141,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3025</span>
+    <span class="phpdocumentor-element-found-in__line">3077</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set legal organisation of the Ship-To party</p>
diff --git a/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptorXRechnung.html b/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptorXRechnung.html
index 612b0809..08719f21 100644
--- a/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptorXRechnung.html
+++ b/doc/classes/horstoeko-zugferd-quick-ZugferdQuickDescriptorXRechnung.html
@@ -272,6 +272,20 @@ <h3 id="toc">
 </dt>
 <dd>Detailed information on surcharges and discounts on item gross price</dd>
 
+            <dt class="phpdocumentor-table-of-contents__entry -method -public">
+    <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductCharacteristic">addDocumentPositionProductCharacteristic()</a>
+    <span>
+                        &nbsp;: <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a>    </span>
+</dt>
+<dd>Undocumented function</dd>
+
+            <dt class="phpdocumentor-table-of-contents__entry -method -public">
+    <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductClassification">addDocumentPositionProductClassification()</a>
+    <span>
+                        &nbsp;: <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a>    </span>
+</dt>
+<dd>Add detailed information on product classification</dd>
+
             <dt class="phpdocumentor-table-of-contents__entry -method -public">
     <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionReceivableSpecifiedTradeAccountingAccount">addDocumentPositionReceivableSpecifiedTradeAccountingAccount()</a>
     <span>
@@ -2627,7 +2641,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionAdditional
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2590</span>
+    <span class="phpdocumentor-element-found-in__line">2642</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add an additional Document reference on a position</p>
@@ -2758,7 +2772,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionAllowanceC
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3258</span>
+    <span class="phpdocumentor-element-found-in__line">3310</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add surcharges and discounts on position level</p>
@@ -2902,7 +2916,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionGrossPrice
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2659</span>
+    <span class="phpdocumentor-element-found-in__line">2711</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on surcharges and discounts on item gross price</p>
@@ -3028,6 +3042,171 @@ <h5 class="phpdocumentor-return-value__heading">Return values</h5>
             <section class="phpdocumentor-description"></section>
 
     
+</article>
+                    <article
+        class="phpdocumentor-element
+            -method
+            -public
+                                                        "
+>
+    <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionProductCharacteristic">
+        addDocumentPositionProductCharacteristic()
+        <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductCharacteristic" class="headerlink"><i class="fas fa-link"></i></a>
+    </h4>
+    <aside class="phpdocumentor-element-found-in">
+    <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
+    :
+    <span class="phpdocumentor-element-found-in__line">2530</span>
+</aside>
+
+        <p class="phpdocumentor-summary">Undocumented function</p>
+
+    <code class="phpdocumentor-code phpdocumentor-signature ">
+    <span class="phpdocumentor-signature__visibility">public</span>
+                <span class="phpdocumentor-signature__name">addDocumentPositionProductCharacteristic</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$description</span></span><span class="phpdocumentor-signature__argument"><span>, </span><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$value</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$typecode</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">float|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$valueMeasure</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$valueMeasureUnitCode</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span></code>
+
+        <section class="phpdocumentor-description"></section>
+
+        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
+    <dl class="phpdocumentor-argument-list">
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$description</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The name of the attribute or property of the article such as &quot;Colour&quot;</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$value</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The value of the attribute or property of the item such as &quot;Red&quot;</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$typecode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Type of product property (code). The codes must be taken from the
+UNTDID 6313 codelist. Available only in the Extended-Profile</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$valueMeasure</span>
+                : <span class="phpdocumentor-signature__argument__return-type">float|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Value of the product property (numerical measurand)</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$valueMeasureUnitCode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Unit of measurement of the measurand</p>
+<ul>
+<li>Codeliste: Rec. N°20 Vollständige Liste, In Recommendation N°20 Intro 2.a ist beschrieben, dass
+beide Listen kombiniert anzuwenden sind.</li>
+<li>Codeliste: Rec. N°21 Vollständige Liste, In Recommendation N°20 Intro 2.a ist beschrieben, dass
+beide Listen kombiniert anzuwenden sind.</li>
+</ul>
+</section>
+
+            </dd>
+            </dl>
+
+    
+
+        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
+    <span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span>
+            &mdash;
+            <section class="phpdocumentor-description"></section>
+
+    
+</article>
+                    <article
+        class="phpdocumentor-element
+            -method
+            -public
+                                                        "
+>
+    <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionProductClassification">
+        addDocumentPositionProductClassification()
+        <a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductClassification" class="headerlink"><i class="fas fa-link"></i></a>
+    </h4>
+    <aside class="phpdocumentor-element-found-in">
+    <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
+    :
+    <span class="phpdocumentor-element-found-in__line">2554</span>
+</aside>
+
+        <p class="phpdocumentor-summary">Add detailed information on product classification</p>
+
+    <code class="phpdocumentor-code phpdocumentor-signature ">
+    <span class="phpdocumentor-signature__visibility">public</span>
+                <span class="phpdocumentor-signature__name">addDocumentPositionProductClassification</span><span>(</span><span class="phpdocumentor-signature__argument"><span class="phpdocumentor-signature__argument__return-type">string&nbsp;</span><span class="phpdocumentor-signature__argument__name">$classCode</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$className</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$listID</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span class="phpdocumentor-signature__argument"><span>[</span><span>, </span><span class="phpdocumentor-signature__argument__return-type">string|null&nbsp;</span><span class="phpdocumentor-signature__argument__name">$listVersionID</span><span> = </span><span class="phpdocumentor-signature__argument__default-value">null</span><span> ]</span></span><span>)</span><span> : </span><span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span></code>
+
+        <section class="phpdocumentor-description"></section>
+
+        <h5 class="phpdocumentor-argument-list__heading">Parameters</h5>
+    <dl class="phpdocumentor-argument-list">
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$classCode</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string</span>
+                            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>A code for classifying the item by type or nature or essence or condition.
+<strong>Note</strong>: Classification codes are used to group similar items for different purposes, such as public
+procurement (using the Common Procurement Vocabulary [CPV]), e-commerce (UNSPSC), etc.</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$className</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>Classification name</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$listID</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The identifier for the identification scheme of the identifier of the article classification
+<strong>Note</strong>: The identification scheme must be selected from the entries from UNTDID 7143.</p>
+</section>
+
+            </dd>
+                    <dt class="phpdocumentor-argument-list__entry">
+                <span class="phpdocumentor-signature__argument__name">$listVersionID</span>
+                : <span class="phpdocumentor-signature__argument__return-type">string|null</span>
+                 = <span class="phpdocumentor-signature__argument__default-value">null</span>            </dt>
+            <dd class="phpdocumentor-argument-list__definition">
+                    <section class="phpdocumentor-description"><p>The version of the identification scheme</p>
+</section>
+
+            </dd>
+            </dl>
+
+    
+
+        <h5 class="phpdocumentor-return-value__heading">Return values</h5>
+    <span class="phpdocumentor-signature__response_type"><a href="classes/horstoeko-zugferd-ZugferdDocumentBuilder.html"><abbr title="\horstoeko\zugferd\ZugferdDocumentBuilder">ZugferdDocumentBuilder</abbr></a></span>
+            &mdash;
+            <section class="phpdocumentor-description"></section>
+
+    
 </article>
                     <article
         class="phpdocumentor-element
@@ -3042,7 +3221,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionReceivable
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3293</span>
+    <span class="phpdocumentor-element-found-in__line">3345</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add an AccountingAccount on item level
@@ -3096,7 +3275,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionShipToGlob
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2807</span>
+    <span class="phpdocumentor-element-found-in__line">2859</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a global id for the Ship-to Trade Party</p>
@@ -3152,7 +3331,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionShipToTaxR
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2831</span>
+    <span class="phpdocumentor-element-found-in__line">2883</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add Tax registration to Ship-To Trade party</p>
@@ -3213,7 +3392,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionTax">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3165</span>
+    <span class="phpdocumentor-element-found-in__line">3217</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add information about the sales tax that applies to the goods and services invoiced
@@ -3334,7 +3513,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateCu
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2606</span>
+    <span class="phpdocumentor-element-found-in__line">2658</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a referennce to a ultimate customer order referenced document</p>
@@ -3395,7 +3574,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2952</span>
+    <span class="phpdocumentor-element-found-in__line">3004</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add a global id for the Ship-to Trade Party</p>
@@ -3451,7 +3630,7 @@ <h4 class="phpdocumentor-element__name" id="method_addDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2969</span>
+    <span class="phpdocumentor-element-found-in__line">3021</span>
 </aside>
 
         <p class="phpdocumentor-summary">Add Tax registration to Ship-To Trade party</p>
@@ -9405,7 +9584,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionBillingPer
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3183</span>
+    <span class="phpdocumentor-element-found-in__line">3235</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set information about the period relevant for the invoice item.</p>
@@ -9461,7 +9640,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionBuyerOrder
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2522</span>
+    <span class="phpdocumentor-element-found-in__line">2574</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set details of the related buyer order position</p>
@@ -9526,7 +9705,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionContractRe
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2542</span>
+    <span class="phpdocumentor-element-found-in__line">2594</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set details of the related contract position</p>
@@ -9591,7 +9770,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionDeliveryNo
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3112</span>
+    <span class="phpdocumentor-element-found-in__line">3164</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated delivery note on item level</p>
@@ -9652,7 +9831,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionDespatchAd
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3080</span>
+    <span class="phpdocumentor-element-found-in__line">3132</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated shipping notification on item level</p>
@@ -9713,7 +9892,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionGrossPrice
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2627</span>
+    <span class="phpdocumentor-element-found-in__line">2679</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set the unit price excluding sales tax before deduction of the discount on the item price.</p>
@@ -9779,7 +9958,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionLineSummat
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3277</span>
+    <span class="phpdocumentor-element-found-in__line">3329</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set information on item totals</p>
@@ -9836,7 +10015,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionNetPrice">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2679</span>
+    <span class="phpdocumentor-element-found-in__line">2731</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set detailed information on the net price of the item</p>
@@ -9900,7 +10079,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionNetPriceTa
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2732</span>
+    <span class="phpdocumentor-element-found-in__line">2784</span>
 </aside>
 
         <p class="phpdocumentor-summary">Tax included for B2C on position level</p>
@@ -10181,7 +10360,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionQuantity">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2765</span>
+    <span class="phpdocumentor-element-found-in__line">2817</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set the position Quantity</p>
@@ -10279,7 +10458,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionReceivingA
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3096</span>
+    <span class="phpdocumentor-element-found-in__line">3148</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the associated shipping notification on item level</p>
@@ -10340,7 +10519,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipTo">
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2789</span>
+    <span class="phpdocumentor-element-found-in__line">2841</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set detailed information on the different ship-to party at item level</p>
@@ -10408,7 +10587,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToAddr
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2864</span>
+    <span class="phpdocumentor-element-found-in__line">2916</span>
 </aside>
 
         <p class="phpdocumentor-summary">Sets the postal address of the Ship-To party</p>
@@ -10513,7 +10692,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToCont
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2911</span>
+    <span class="phpdocumentor-element-found-in__line">2963</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set contact of the Ship-To party</p>
@@ -10595,7 +10774,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionShipToLega
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2887</span>
+    <span class="phpdocumentor-element-found-in__line">2939</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set legal organisation of the Ship-To party on item level</p>
@@ -10663,7 +10842,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionSupplyChai
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3064</span>
+    <span class="phpdocumentor-element-found-in__line">3116</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the actual delivery on item level</p>
@@ -10708,7 +10887,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">2934</span>
+    <span class="phpdocumentor-element-found-in__line">2986</span>
 </aside>
 
         <p class="phpdocumentor-summary">Detailed information on the different end recipient</p>
@@ -10775,7 +10954,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3002</span>
+    <span class="phpdocumentor-element-found-in__line">3054</span>
 </aside>
 
         <p class="phpdocumentor-summary">Sets the postal address of the Ship-To party</p>
@@ -10880,7 +11059,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3049</span>
+    <span class="phpdocumentor-element-found-in__line">3101</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set contact of the Ship-To party</p>
@@ -10962,7 +11141,7 @@ <h4 class="phpdocumentor-element__name" id="method_setDocumentPositionUltimateSh
     <aside class="phpdocumentor-element-found-in">
     <abbr class="phpdocumentor-element-found-in__file" title="src/ZugferdDocumentBuilder.php"><a href="files/src-zugferddocumentbuilder.html"><abbr title="src/ZugferdDocumentBuilder.php">ZugferdDocumentBuilder.php</abbr></a></abbr>
     :
-    <span class="phpdocumentor-element-found-in__line">3025</span>
+    <span class="phpdocumentor-element-found-in__line">3077</span>
 </aside>
 
         <p class="phpdocumentor-summary">Set legal organisation of the Ship-To party</p>
diff --git a/doc/js/searchIndex.js b/doc/js/searchIndex.js
index 55787880..c7b90bc4 100644
--- a/doc/js/searchIndex.js
+++ b/doc/js/searchIndex.js
@@ -19695,6 +19695,16 @@ Search.appendIndex(
             "name": "setDocumentPositionProductDetails",
             "summary": "Adds\u0020product\u0020details\u0020to\u0020the\u0020last\u0020created\u0020position\u0020\u0028line\u0029\u0020in\u0020the\u0020document",
             "url": "classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_setDocumentPositionProductDetails"
+        },                {
+            "fqsen": "\\horstoeko\\zugferd\\ZugferdDocumentBuilder\u003A\u003AaddDocumentPositionProductCharacteristic\u0028\u0029",
+            "name": "addDocumentPositionProductCharacteristic",
+            "summary": "Undocumented\u0020function",
+            "url": "classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductCharacteristic"
+        },                {
+            "fqsen": "\\horstoeko\\zugferd\\ZugferdDocumentBuilder\u003A\u003AaddDocumentPositionProductClassification\u0028\u0029",
+            "name": "addDocumentPositionProductClassification",
+            "summary": "Add\u0020detailed\u0020information\u0020on\u0020product\u0020classification",
+            "url": "classes/horstoeko-zugferd-ZugferdDocumentBuilder.html#method_addDocumentPositionProductClassification"
         },                {
             "fqsen": "\\horstoeko\\zugferd\\ZugferdDocumentBuilder\u003A\u003AsetDocumentPositionBuyerOrderReferencedDocument\u0028\u0029",
             "name": "setDocumentPositionBuyerOrderReferencedDocument",