This error occurs when VERITAS Backup Exec (tm) attempts to back up a file that is in use by another application or user.
Backup Exec may back up partial data from such a file, but when it is not able to continue the backup of the file, Backup Exec marks the file on the tape as corrupt.
Please refer to the technote below to resolve the issue:
http://seer.support.veritas.com\docs\258696.htm
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As an additional infomation kindly refer the following steps mentioned in the link given below.
Refer to the following technotes for more information:- 1.
http://support.veritas.com/docs/241916.htm
We hope this helps. Let us know if the problem still exists and revert back with the error message.