NetBackup error code 96
We are using Veritas NetBackup 6.5. Frequently most of the jobs will fail with error code 96. Some times this will happen because of unavailable of scratch tapes. At that time when we load scratch tapes and move those tapes to appropriate volume pool, jobs are running successfully. Sometimes even though we have empty tapes in that particular volume pool, jobs are getting failed.
Any one can please suggest me, why it is happening like this??
Thanks in advance,