SAP Message REORRS016 - Partner &1 does not have the role of reservation requester

Diagnosis You assigned partner &V2& as a reservation requester.However, the role &V1& of the partner is not defined for areservation requester. Procedure The role of a reservation requester must be based on role categoryTR0817. Define a role of this kind in Customizing in theDefine BP Roles IMG activity.