Netbackup Tape Inventory Problem

Hi All,

Our tape library was having a problem (HP ESL322E), then the engineer fixed the problem. After that I see "Media and Device Management" -> Media -> Robots -> TLD(1) the content is empty.

So what I did the "Invontory Robot" with the "Inventory operation" tick to "Update volume configuration" and start, it can do the  inventory for all the tapes in that tape library, but after I click OK. the content is still empty ( "Media and Device Management" -> Media -> Robots -> TLD(1) the content is empty)

So what it went wrong? Is it the tape library problem or the Netbackup Problem.

Thank you,

Iwan