First you need to remove all cleaning tapes from your configuration, find the tapes and eject them or pull them out of the library, now find them in the DB and delete them, if they are not seen in the database or in the Volume group at all and the tapes are in the library then remove them.
Read this link
http://forums.symantec.com/discussions/thread.jspa?messageID=4416441掹
how many robots do you have?
If you only have one robot then your system may have been upgraded, anyhow, this number 00_002_TLD gets configured at installtion time, usually a new robot or new installation starts at 00_000_TLD, soooo if you add another robot, lets say in a upgrade then you will get the next number in line. Anyhow read the link and try again, or you can read the Admin Guide.