Message SAP WTADDI217 - You are not authorized to use the additionals monitor

Diagnosis
In the additionals monitor you are attempting to change data orgenerate additionals IDocs or follow-on purchase orders. You requirespecial authorizations for these actions.

System Response
You cannot carry out the action you are attempting because you are notauthorized to do so.

Procedure
Ask your system administration to provide you with the relevantauthorization.