diff --git a/src/validation.rs b/src/validation.rs
index 84e3248..1f3db36 100644
--- a/src/validation.rs
+++ b/src/validation.rs
@@ -26,6 +26,7 @@ use crate::{
     datamodel::DataModel,
     markdown::position::Position,
     object::{Enumeration, Object},
+    xmltype::XMLType,
 };
 use colored::Colorize;
 use log::error;
@@ -417,6 +418,17 @@ impl Validator {
         for dtype in &attribute.dtypes {
             self.check_attr_dtype(attribute, types, object, dtype);
         }
+
+        if let Some(xml_option) = &attribute.xml {
+            match xml_option {
+                XMLType::Attribute { name, .. } => {
+                    self.validate_xml_attribute_option(name, &object.name, &attribute.name);
+                }
+                XMLType::Element { name, .. } => {
+                    self.validate_xml_element_option(name, &object.name, &attribute.name);
+                }
+            }
+        }
     }
 
     /// Checks the data type of attribute.
@@ -502,6 +514,101 @@ impl Validator {
         }
     }
 
+    /// Validates an XML element option string.
+    ///
+    /// # Arguments
+    ///
+    /// * `option` - The XML element option string to validate. Can contain multiple comma-separated values.
+    ///
+    /// Checks that:
+    /// - The option string is not empty
+    /// - Each comma-separated value contains no special characters
+    fn validate_xml_element_option(
+        &mut self,
+        option: &str,
+        object_name: &str,
+        attribute_name: &str,
+    ) {
+        let option = option.trim();
+        if option.is_empty() {
+            self.add_error(ValidationError {
+                message: "XML option is not defined.".into(),
+                object: Some(object_name.to_string()),
+                attribute: Some(attribute_name.to_string()),
+                location: "Global".into(),
+                error_type: ErrorType::GlobalError,
+                positions: vec![],
+            });
+        }
+
+        let options = option.split(',').map(|s| s.trim()).collect::<Vec<_>>();
+        for opt in options {
+            if contains_special_characters(opt.trim()).is_err() {
+                self.add_error(ValidationError {
+                    message: format!("XML option '{}' contains special characters.", opt),
+                    object: Some(object_name.to_string()),
+                    attribute: Some(attribute_name.to_string()),
+                    location: "Global".into(),
+                    error_type: ErrorType::GlobalError,
+                    positions: vec![],
+                });
+            }
+        }
+    }
+
+    /// Validates an XML attribute option string.
+    ///
+    /// # Arguments
+    ///
+    /// * `option` - The XML attribute option string to validate. Can contain multiple comma-separated values.
+    /// * `object_name` - The name of the object containing this attribute
+    /// * `attribute_name` - The name of the attribute being validated
+    ///
+    /// Checks that:
+    /// - The option string is not empty
+    /// - Each comma-separated value contains no special characters
+    ///
+    /// # Errors
+    ///
+    /// Adds validation errors to the validator if:
+    /// - The option string is empty
+    /// - Any of the comma-separated values contain special characters
+    fn validate_xml_attribute_option(
+        &mut self,
+        option: &str,
+        object_name: &str,
+        attribute_name: &str,
+    ) {
+        let option = option.trim();
+        if option.is_empty() {
+            self.add_error(ValidationError {
+                message: "XML attribute option is not defined.".into(),
+                object: Some(object_name.to_string()),
+                attribute: Some(attribute_name.to_string()),
+                location: "Global".into(),
+                error_type: ErrorType::GlobalError,
+                positions: vec![],
+            });
+        }
+
+        let options = option.split(',').map(|s| s.trim()).collect::<Vec<_>>();
+        for opt in options {
+            if contains_special_characters(opt).is_err() {
+                self.add_error(ValidationError {
+                    message: format!(
+                        "XML attribute option '{}' contains special characters.",
+                        opt
+                    ),
+                    object: Some(object_name.to_string()),
+                    attribute: Some(attribute_name.to_string()),
+                    location: "Global".into(),
+                    error_type: ErrorType::GlobalError,
+                    positions: vec![],
+                });
+            }
+        }
+    }
+
     /// Extracts the type names from the data model.
     ///
     /// # Arguments
diff --git a/tests/data/model_invalid_xml_option.md b/tests/data/model_invalid_xml_option.md
new file mode 100644
index 0000000..0113a5a
--- /dev/null
+++ b/tests/data/model_invalid_xml_option.md
@@ -0,0 +1,37 @@
+---
+id-field: true
+repo: "https://www.github.com/my/repo/"
+prefix: "tst"
+prefixes:
+  schema: http://schema.org/
+nsmap:
+  tst: http://example.com/test/
+---
+
+### Test
+
+- __empty_attribute__
+  - Type: string
+  - Term: schema:hello
+  - Description: The name of the test.
+  - XML: @
+- __empty_element__
+  - Type: string
+  - Term: schema:hello
+  - Description: The name of the test.
+  - XML: 
+- __special_character_element__
+  - Type: string
+  - Term: schema:hello
+  - Description: The name of the test.
+  - XML: schema:hello
+- __special_character_attribute__
+  - Type: string
+  - Term: schema:hello
+  - Description: The name of the test.
+  - XML: @schema:hello
+- __multiple_types__
+  - Type: string, float
+  - Term: schema:hello
+  - Description: The name of the test.
+  - XML: fine, bad:
diff --git a/tests/integration_tests.rs b/tests/integration_tests.rs
index 3c3f681..dad92f7 100644
--- a/tests/integration_tests.rs
+++ b/tests/integration_tests.rs
@@ -332,6 +332,23 @@ mod tests {
         DataModel::from_markdown(path).expect("Could not parse markdown");
     }
 
+    #[test]
+    fn test_invalid_xml_option() {
+        let path = Path::new("tests/data/model_invalid_xml_option.md");
+        let result = DataModel::from_markdown(path);
+
+        if let Err(e) = result {
+            assert_eq!(
+                e.errors.len(),
+                5,
+                "Expected 5 errors, got {}",
+                e.errors.len()
+            );
+        } else {
+            panic!("Expected error, but got success");
+        }
+    }
+
     #[test]
     fn test_multiple_types() {
         let path = Path::new("tests/data/model_multiple_types.md");