I found this in the documentation (not sure if this helps):
NetBackup status code: 2808
Message: Windows File System policy restore error
Explanation: An error caused some or all of the files to fail the restore operation.
Recommended Action: Try the...
From the NetBackup Commands Reference guide -
By default, you return to the system prompt after bpbackup is successfully submitted.
The command works in the background and does not return completion status directly to you.
The -w option lets you ...