You can't delete single savesets on a tape.Either wait for all savesets on it to expire or you can clone the browsable savesets to another volume. Then you can relabel the tape and clone the savesets back to it.
How to make tape appendable if its full?  some backups are recyclable and some are browsable. How can i delete the recyclable backups only from tape with disturbing the browsable backups. by deleting the expired backup i just want to make free space in tape to save fresh backup. Please help
How to make tape appendable if its full?