Hello,
Please note that Backup Exec v9.x licenses are not compatible with Backup Exec v10.x and vice versa.
So if you dont the upgrade license for Backup Exec v10.1, then this message will appear.
To get the upgrade license, kindly contact our Sales team. The link is mentioned below:
http://www.symantec.com/corporate/corpdir.html
Regards
NOTE : If we do not receive your reply within two business days, this post would be marked "assumed answered" and would be moved to "answered questions" pool.