SAP Message RSBK255 - Could not delete predecessor request &

Diagnosis
You want to start the data transfer process (DTP) &V2& in a processchain. The request &V1& that was generated during the last run hasstatus 'red'. The DTP is configured in such a way that the previousrequest is to be automatically deleted in this case.

System Response
The previous request could not be deleted.

Procedure
Manually delete the previous request &V1&.