SAP Message 01590 - You are not authorized to assign roles

Diagnosis IF &V1& <> &V1(0)& AND &V2& <> &V2(0)& You are not authorized to assign the role &V1& to user &V2& or to cancel the assignment. ELSEIF &V1& = &V1(0)& AND &V2& <> &V2(0)& You are not authorized to assign roles to user &V2& or to cancelthe assignment. ELSEIF &V1& <> &V1(0)& AND &V2& = &V2(0)& You are not authorized to assign role &V1& to users or to cancelthe assignment. ELSEIF &V1& = &V1(0)& AND &V2& = &V2(0)& You are not authorized to assign roles to users or to cancel theassignment. ENDIF