SAP Message REORPO071 - Role &1 of partner &2 is not allowed role for assignment planner

Diagnosis You assigned partner &V2& as an assignment planner.However, the role &V1& of the partner is not defined for anassignment planner. Procedure The role of an assignment planner must be based on role category TR0813.Define a role of this kind in Customizing in theDefine BP Roles IMG activity.