SAP Message USMD1073 - Data model &1, entity type &2: Additional entity type &3 not allowed

Diagnosis Leading entity types of entity types with usage #hierarchy name# cannotbe specified as additional entity types of the same hierarchy-definingentity type. System Response The data model cannot be saved. Procedure Remove entity type &V3& from the list of additional entity types of thehierarchy-defining entity type &V2&.