Diagnosis
You have tried to reverse a final bill for contract &V1&. This finalbill was generated in a supplier change. You can only reverse the finalbill, when no more valid billing documents exist for subsequentcontract &V2&.
A check determined that at least one unreversed billing document existsfor contract &V2&.

System Response
INCLUDE ISU_VERARB OBJECT DOKU ID TX

Procedure
Reverse all billing documents for contract &V2&.
Reverse the final bill for contract &V1&.