Source:  SBCON.NLM

Possible Cause:  The device driver for the tape device/host adapter is not loaded.

Action:  Load the correct device driver.

Possible Cause:  No media is present in the tape drive.

Action:  Check that the media is present in the tap drive.

Possible Cause:  The media is in use by another job.

Action:  Make sure no other job is running on the media.

Possible Cause:  The media label does not match the media label provided during the job submission.

Action:   Make sure the label provided during job submission is the same as the media label present during backup/restore. If you are not sure, accept the default setting for the Device/Media name during job submission.