Ensure ClassId annotations transfered to the form data are unique.
Append '-formdata' to the ClassId.
diff --git a/org.eclipse.scout.sdk/src/org/eclipse/scout/sdk/internal/workspace/dto/AbstractDtoTypeSourceBuilder.java b/org.eclipse.scout.sdk/src/org/eclipse/scout/sdk/internal/workspace/dto/AbstractDtoTypeSourceBuilder.java
index cf9d8df..7fb6f4b 100644
--- a/org.eclipse.scout.sdk/src/org/eclipse/scout/sdk/internal/workspace/dto/AbstractDtoTypeSourceBuilder.java
+++ b/org.eclipse.scout.sdk/src/org/eclipse/scout/sdk/internal/workspace/dto/AbstractDtoTypeSourceBuilder.java
@@ -19,10 +19,12 @@
 import org.eclipse.jdt.core.IAnnotatable;
 import org.eclipse.jdt.core.IAnnotation;
 import org.eclipse.jdt.core.IJavaProject;
+import org.eclipse.jdt.core.IMemberValuePair;
 import org.eclipse.jdt.core.IMethod;
 import org.eclipse.jdt.core.IType;
 import org.eclipse.jdt.core.JavaModelException;
 import org.eclipse.jdt.core.Signature;
+import org.eclipse.scout.commons.CompareUtility;
 import org.eclipse.scout.commons.StringUtility;
 import org.eclipse.scout.sdk.extensions.runtime.classes.IRuntimeClasses;
 import org.eclipse.scout.sdk.internal.ScoutSdk;
@@ -53,7 +55,7 @@
 
 /**
  * <h3>{@link AbstractDtoTypeSourceBuilder}</h3>
- *
+ * 
  * @author Andreas Hoegger
  * @since 3.10.0 27.08.2013
  */
@@ -160,6 +162,7 @@
 
                 // check if there is source available
                 String copySrc = annotation.getSource();
+
                 if (!StringUtility.hasText(copySrc)) {
                   ScoutSdk.logInfo("DTO relevant annotation '" + annotationDeclarationType.getFullyQualifiedName() + "' in type '" + declaringType.getFullyQualifiedName() + "' has no source code. Annotation will be skipped.");
                   return;
@@ -173,6 +176,14 @@
                     return;
                   }
                 }
+                IType classIdType = TypeUtility.getType(IRuntimeClasses.ClassId);
+                if (CompareUtility.equals(annotationDeclarationType, classIdType)) {
+                  // classid append formdata
+                  IMemberValuePair[] memberValuePairs = annotation.getMemberValuePairs();
+                  if (memberValuePairs != null && memberValuePairs.length == 1 && memberValuePairs[0].getMemberName().equals("value")) {
+                    copySrc = copySrc.replace(memberValuePairs[0].getValue().toString(), memberValuePairs[0].getValue().toString() + "-formdata");
+                  }
+                }
 
                 // add imports to referenced types
                 for (IType t : typeOccurenceInAnnotation) {