SAP Message PV529 - You have no authorization to relate this object

Diagnosis
You are attempting to relate object &V1& &V2& in plan version &V3& withthe object you are editing. Relationship &V4& is not allowed for thisobject since you do not have the required authorization.

System Response
None

Procedure
Please choose an object that you are authorized to edit (using thePossible Entries feature, if necessary).