If a vault job fails, first consult the NetBackup Administration Console Activity Monitor or the notification of session status (the session's summary.log). If they do not provide enough information to determine the cause of the problem, examine the other log files.
After you determine the cause, you can do one of the following:
Start a new session for your profile. If you are doing duplication, Vault does not duplicate any images it already duplicated, but it does eject those images if the profile is configured to eject. (This behavior is similar to checkpoint and restart.)