Index: org/exolab/castor/xml/UnmarshalHandler.java
===================================================================
--- org/exolab/castor/xml/UnmarshalHandler.java	(Revision 6793)
+++ org/exolab/castor/xml/UnmarshalHandler.java	(Arbeitskopie)
@@ -2931,7 +2931,7 @@
         if (classDesc.getIdentity() == descriptor) {
             
             try {
-                _idResolver.bind(attValue, parent);
+                _idResolver.bind(attValue, parent, _validate);
             } catch (ValidationException e) {
                 throw new SAXException("Duplicate ID " + attValue + " encountered.", e);
             }
Index: org/exolab/castor/xml/IDResolverImpl.java
===================================================================
--- org/exolab/castor/xml/IDResolverImpl.java	(Revision 6793)
+++ org/exolab/castor/xml/IDResolverImpl.java	(Arbeitskopie)
@@ -26,16 +26,18 @@
      *            Object identifier
      * @param object
      *            Object being identified by ID
+     * @param _validate 
      * @throws ValidationException
      *             If an ID is used more than once.
      */
-    void bind(final String id, final Object object) throws ValidationException {
+    void bind(final String id, final Object object, final boolean isValidating) 
+        throws ValidationException {
         
         if (id.equals("") || id == null) {
             throw new ValidationException ("Invalid (empty) ID value encountered");
         }
 
-        if (_idReferences.containsKey(id)) {
+        if (isValidating && _idReferences.containsKey(id)) {
             if (!(id.equals("org.exolab.castor.mapping.MapItem") ||
                     id.equals("HIGH-LOW"))) {
                 throw new ValidationException("Duplicate ID " + id + " encountered");
Index: org/castor/mapping/MappingUnmarshaller.java
===================================================================
--- org/castor/mapping/MappingUnmarshaller.java	(Revision 6793)
+++ org/castor/mapping/MappingUnmarshaller.java	(Arbeitskopie)
@@ -205,6 +205,7 @@
         try {
             // Load the specificed mapping source
             Unmarshaller unm = new Unmarshaller(MappingRoot.class);
+            unm.setValidation(false);
             unm.setEntityResolver(resolver);
             unm.setClassLoader(Mapping.class.getClassLoader());
             unm.setIDResolver(_idResolver);