Diagnosis
An internal error has occurred.

System Response
Processing has been terminated.

Procedure
Contact SAP and provide the following information:
The specified billing document &v1& has been reversed in billing.According to the history table ERCHC, the current invoicing documentV2 exists, but it shows no offsetting document. the billing documenthas therefore not been reversed in invoicing. Since the invoicingreversal must be executed before the billing reversal, this situationrepresents an inconsistency.