=== modified file 'dhis-2/dhis-api/src/main/java/org/hisp/dhis/trackedentity/TrackedEntityAttributeService.java'
--- dhis-2/dhis-api/src/main/java/org/hisp/dhis/trackedentity/TrackedEntityAttributeService.java	2015-09-30 06:14:51 +0000
+++ dhis-2/dhis-api/src/main/java/org/hisp/dhis/trackedentity/TrackedEntityAttributeService.java	2015-09-30 06:22:47 +0000
@@ -195,9 +195,9 @@
      * @param trackedEntityAttribute TrackedEntityAttribute
      * @param organisationUnit       OrganisationUnit - only required if org unit scoped
      * @param value                  Value
-     * @return true is unique, false otherwise
+     * @return null if valid, a message if not
      */
-    boolean validateScope( TrackedEntityInstance trackedEntityInstance, TrackedEntityAttribute trackedEntityAttribute,
+    String validateScope( TrackedEntityInstance trackedEntityInstance, TrackedEntityAttribute trackedEntityAttribute,
         OrganisationUnit organisationUnit, String value );
 
     /**

=== modified file 'dhis-2/dhis-services/dhis-service-core/src/main/java/org/hisp/dhis/trackedentity/DefaultTrackedEntityAttributeService.java'
--- dhis-2/dhis-services/dhis-service-core/src/main/java/org/hisp/dhis/trackedentity/DefaultTrackedEntityAttributeService.java	2015-09-30 06:14:51 +0000
+++ dhis-2/dhis-services/dhis-service-core/src/main/java/org/hisp/dhis/trackedentity/DefaultTrackedEntityAttributeService.java	2015-09-30 06:22:47 +0000
@@ -200,7 +200,7 @@
     }
 
     @Override
-    public boolean validateScope( TrackedEntityInstance trackedEntityInstance, TrackedEntityAttribute trackedEntityAttribute,
+    public String validateScope( TrackedEntityInstance trackedEntityInstance, TrackedEntityAttribute trackedEntityAttribute,
         OrganisationUnit organisationUnit, String value )
     {
         Assert.notNull( trackedEntityInstance, "trackedEntityInstance is required." );
@@ -208,7 +208,7 @@
 
         if ( !trackedEntityAttribute.isUnique() )
         {
-            return true;
+            return null;
         }
 
         TrackedEntityInstanceQueryParams params = new TrackedEntityInstanceQueryParams();
@@ -227,7 +227,12 @@
 
         Grid instances = trackedEntityInstanceService.getTrackedEntityInstancesGrid( params );
 
-        return instances.getHeight() == 0 || instances.getHeight() == 1 && instances.getRow( 0 ).contains( trackedEntityInstance.getUid() );
+        if ( !(instances.getHeight() == 0 || instances.getHeight() == 1 && instances.getRow( 0 ).contains( trackedEntityInstance.getUid() )) )
+        {
+            return "Non-unique attribute value '" + value + "' for attribute " + trackedEntityAttribute.getUid();
+        }
+
+        return null;
     }
 
     @Override

=== modified file 'dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/events/trackedentity/AbstractTrackedEntityInstanceService.java'
--- dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/events/trackedentity/AbstractTrackedEntityInstanceService.java	2015-09-30 06:14:51 +0000
+++ dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/events/trackedentity/AbstractTrackedEntityInstanceService.java	2015-09-30 06:22:47 +0000
@@ -431,19 +431,19 @@
             return importConflicts;
         }
 
-        TrackedEntityAttribute teAttribute = getTrackedEntityAttribute( attribute.getAttribute() );
+        TrackedEntityAttribute trackedEntityAttribute = getTrackedEntityAttribute( attribute.getAttribute() );
 
-        if ( teAttribute == null )
+        if ( trackedEntityAttribute == null )
         {
             importConflicts.add( new ImportConflict( "Attribute.attribute", "Does not point to a valid attribute." ) );
             return importConflicts;
         }
 
-        String message = trackedEntityAttributeService.validateValueType( teAttribute, attribute.getValue() );
+        String errorMessage = trackedEntityAttributeService.validateValueType( trackedEntityAttribute, attribute.getValue() );
 
-        if ( message != null )
+        if ( errorMessage != null )
         {
-            importConflicts.add( new ImportConflict( "Attribute.value", message ) );
+            importConflicts.add( new ImportConflict( "Attribute.value", errorMessage ) );
         }
 
         return importConflicts;
@@ -482,21 +482,23 @@
         return importConflicts;
     }
 
-    private List<ImportConflict> checkScope( org.hisp.dhis.trackedentity.TrackedEntityInstance tei, TrackedEntityAttribute attribute, String value, OrganisationUnit organisationUnit )
+    private List<ImportConflict> checkScope( org.hisp.dhis.trackedentity.TrackedEntityInstance trackedEntityInstance,
+        TrackedEntityAttribute trackedEntityAttribute, String value, OrganisationUnit organisationUnit )
     {
         List<ImportConflict> importConflicts = new ArrayList<>();
 
-        if ( attribute == null || value == null )
-        {
-            return importConflicts;
-        }
-
-        if ( trackedEntityAttributeService.validateScope( tei, attribute, organisationUnit, value ) )
-        {
-            return importConflicts;
-        }
-
-        importConflicts.add( new ImportConflict( "Attribute.value", "Non-unique attribute value '" + value + "' for attribute " + attribute.getUid() ) );
+        if ( trackedEntityAttribute == null || value == null )
+        {
+            return importConflicts;
+        }
+
+        String errorMessage = trackedEntityAttributeService.validateScope( trackedEntityInstance, trackedEntityAttribute, organisationUnit, value );
+
+        if ( errorMessage != null )
+        {
+            importConflicts.add( new ImportConflict( "Attribute.value", errorMessage ) );
+        }
+
         return importConflicts;
     }