SAP Message >0483 - Document belongs to coll. invoice &1 for which installment plan &2 exists

Diagnosis
The document to be reversed, &V3&, is part of the collective bill &V1&,which is entered in installment plan &V2&. You cannot reverse itemsthat belong to an installment plan.

System Response
Error message.

Procedure
First deactivate installment plan &V2&. You can then reverse documentV3. this automatically reduces the remaining open amount ofcollective bill &V1&.
If necessary, you can create a new installment plan for the remainingopen receivables.