audit issues

"need to audit Veritas Natbackup please what should i look" 

what kind of audit you want to do backup audit / hardware audit / software audit ??

backup audit and software audit

In this forum, there is only Netbackup-related.

From version 7.1 onwards, Netbackup has a new feature for audit trail - to keep track of user activities in Netbackup environment, please get details from release note:

http://www.symantec.com/docs/DOC3643

As for audit on capacity or license, here is another technote on it:

http://www.symantec.com/docs/TECH148678