SAP Message AO589 - Approver role &1 is simultaneously defined as applicant

Diagnosis
For appropriation request &v2&, role &V1& is simultaneously defined asapprover and as applicant. Therefore the role is not allowed to makeapproval.

System Response
The status of the appropriation request cannot be set to forapproval.

Procedure
Define two separate roles for approver and applicant in Customizing.