From 4eb995114431b4f93212e74dae64eec39c6101b8 Mon Sep 17 00:00:00 2001
From: "lukas.kumai" <l.kumai@lava-unternehmensberatung.de>
Date: Fri, 12 Apr 2024 11:33:38 +0200
Subject: [PATCH] set BT-13 with a hyhen if it is empty

---
 .../com/helger/en16931/cii2ubl/CIIToUBL21Converter.java  | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL21Converter.java b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL21Converter.java
index 563882d..205e5a2 100644
--- a/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL21Converter.java
+++ b/en16931-cii2ubl/src/main/java/com/helger/en16931/cii2ubl/CIIToUBL21Converter.java
@@ -713,6 +713,15 @@ public InvoiceType convertToInvoice (@Nonnull final CrossIndustryInvoiceType aCI
     {
       final OrderReferenceType aUBLOrderRef = _createUBLOrderRef (aHeaderAgreement.getBuyerOrderReferencedDocument (),
                                                                   aHeaderAgreement.getSellerOrderReferencedDocument ());
+      /* Set BT-13 with a hyhen if it is empty */
+      if(aUBLOrderRef != null) 
+      {
+        if(aUBLOrderRef.getIDValue().equals("")) 
+        {
+          aUBLOrderRef.setID("-");
+        }
+      }
+      
       aUBLInvoice.setOrderReference (aUBLOrderRef);
     }