Robotic status code 258
Message: Cleaning/unknown media in drive
Explanation: A request to mount a tape failed because the cleaning media was found in the drive.
Recommended Action:
Examine the command output, debug logs, and system logs for a more detailed message on the error.
See "Setting Media Manager debug logging to a higher level" in the NetBackup Logging Reference Guide.
Retry the operation once the drive cleaning has completed.