SAP Message USMD2134 - Entity &2 of type &1 already exists in change request &3

Diagnosis
Objects that are to be changed can only be included in one changerequest. Entity &V2& of entity type &V1& is already contained in changerequest &V3&. This means that you cannot include the entity in thecurrent change request.

Procedure
Remove entity &V2& of entity type &V1& from the change request.