SAP Message >0890 - Installment plan &1 cannot be output; already reversed

Diagnosis
The installment plan letter could not be output since the installmentplan was already reversed.

System Response
The print date (DFKKCOH-COPRI) is nonetheless set in a productive run,so that the no longer relevant entries can be excluded from the mass runin the future.

Procedure
In the future, print the installment plan letter before deactivating theinstallment plan.