Message: Drive is not allocated.
Explanation: MDS has been asked to deallocate a drive that is not allocated.
Recommended Action: This error is internal to the MDS component of NetBackup.
Check the following logs:
The mds unified logging files (OID 143) from the master server at debug level 2.
The nbrb unified logging files (OID 118) from the master server at debug level 3.