The Associations referred to in the AssociationGroup '{0}' do not have a consistent set of Source and Destination elements. ...

The Associations referred to in the AssociationGroup '{0}' do not have a consistent set of Source and Destination elements. All associations referred through the AssociationReference elements of an AssociationGroup should have the same Source and Destination elements. For AssociationReferences marked as Reverse the DestinationEntity is treated as the SourceEntity and vice versa.