Not much to go on but heres where to start looking.
LOGS
/usr/openv/netbackup/logs/bphdb
/usr/openv/netbackup/logs/dbclient
/usr/openv/netbackup/logs/bpbkar
/usr/openv/netbackup/logs/user_ops/dbext/logs
/usr/openv/netbackup/logs/backint
GUIDES
Troubleshooting Guide for UNIX, Linux, and Windows (
http://seer.entsupport.symantec.com/docs/290230.htm )
SAP System Administrator's Guide for UNIX and Linux (
http://seer.entsupport.symantec.com/docs/290217.htm )
SAP System Administrator's Guide for Windows (
http://seer.entsupport.symantec.com/docs/290218.htm )
BACKUP SCRIPT
Check the utl file specified by the script via the backup selection in the policy.
INDEX of Docs manual search
http://seer.support.veritas.com/docs/NBUESVR_index.htm
In Firefox CTRL+F and search for SAP or Status Code 6
Or similar thing in other browsers
Can you give us anymore to go on?