SAP Message USMD2063 - Entity type &2, UI element &1: Web Dynpro component &4 already used

Diagnosis The Web Dynpro component &V4& has already been used in UI element &V3&.You are not allowed to use it again. INCLUDE CHANGES_CANNOT_BE_SAVED OBJECT DOKU ID TX Procedure Delete UI element &V1& of entity type &V2&, or assign the UI element adifferent Web Dynpro component.