Jon,

You can not check the volume back in as scratch until the information in
your volume history file has been deleted for that tape. Use the command

TSM> h q volhist

to see more information on using the "q volhist" command. This can be used
to identify the tape and then once all the parameters are correct to only
bring back the tape in question, you can change the word "query" to "delete"
to remove the entry from the volume history file.

Once this has been done the tape can be checked back in as ascratch tape.

HIH

Steve Copper