Check to make sure the on the TSM server side, the following had been set to YES

Under the Kite01_oracle client node on the TSM check to see whether you have

Archive Delete Allowed? Yes
Backup Delete Allowed? Yes

If you don't have these set to Yes, then TSM will not allow you to manage the serverside backups. If you want RMAN to manage it, then you would have to set these two parameters to yes and then try, it would work.

Hope this would help you.

Sam