Catalog Backup failing with error code 2

Hi,

Catalong backup is failing with error code 2:

22/05/2013 13:38:13 - Info bpdbm(pid=13940) staging relational database files for catalog backup     
22/05/2013 13:38:13 - Info bpdbm(pid=13940) staging NBAZDB backup to N:\Program Files\Veritas\NetBackupDB\staging      
22/05/2013 13:38:13 - Info bpdbm(pid=13940) done staging NBAZDB backup to N:\Program Files\Veritas\NetBackupDB\staging     
22/05/2013 13:38:13 - Info bpdbm(pid=13940) staging NBDB backup to N:\Program Files\Veritas\NetBackupDB\staging      
22/05/2013 13:38:16 - Info bpdbm(pid=13940) done staging NBDB backup to N:\Program Files\Veritas\NetBackupDB\staging     
22/05/2013 13:43:03 - Info bpdbm(pid=13940) validating NBAZDB backup in N:\Program Files\Veritas\NetBackupDB\staging      
22/05/2013 13:43:04 - Error bpdbm(pid=13940) error validating NBAZDB backup in N:\Program Files\Veritas\NetBackupDB\staging     
22/05/2013 13:43:04 - Info bpdbm(pid=13940) validating NBDB backup in N:\Program Files\Veritas\NetBackupDB\staging      
22/05/2013 13:43:04 - Error bpdbm(pid=13940) error validating NBDB backup in N:\Program Files\Veritas\NetBackupDB\staging     
none of the requested files were backed up(2)

Environment details.

Master Server : OS 2003 - 32 Bit - NetBackup 7.5

Media Server  Sun OS 5.10 - Unix  - Netbackup 7.5.

Any Suggestion or idea,..

Thanks in Advance