Unable to move a tape to the Scratch or other media set in Backup Exec 2012.
It shows error:
Unable to Update the media set.
Physical Volume Library Media Not Available.
This error occurs if the tape being moved to another media set is currently in use by a backup or other job.
1. Cancel the job using the media, or wait until it completes and then try to move the tape to the scratch or other media set.
Note: Moving media to the scratch media set will make it immediately available for overwrite operations. Moving media to other media sets will automatically assign the set's Overwrite Protection settings, making it unavailable for overwrite operations until the overwrite period has expired. It is usually better to allow Backup Exec to assign tapes to media sets as the jobs run.