DUPLICATE_FIELDPROPERTY_CWPRJ1104E=CWPRJ1104E: Attribute is defined more than once.
Explanation
An attribute or association must have a unique name and cannot be defined more than one time for a single entity.
User response
Review the XML definition for the entity and verify that there is a different name for each element: basic, one-to-one, many-to-one, one-to-many or many-to-many.