Diagnosis
Objects are only to be overwritten by the BW generation tool that are
flagged as generated in the object catalog. The present objectV1/v2/v3 belongs to development class v4 and is not flagged asgenerated.

System Response
Generation has been cancelled.

Procedure
It is probably a program error in the calling application. If you aresure that the object indicated above is to be deleted anyway, firstdelete the object and its entry in the object catalog and then startgeneration again.