SAP Message SMO8039 - Resuming unprocessed BDocs may result in serialization errors.

Diagnosis
You chose the option "Resume". This means that all BDocs which are:
- created on DB but not in process
- with technically aborted processing ("Dump")
will be continue their processing.
The BDocs in error status (for instance after calling the R/3) doesn'tbelong to this group of BDocs. They will be re-processed in each case.

System Response
Warning