Your Veritas confidant had not a clue.  Your Symantec advice is correct.

A status code of 0 or 1 results in a "good" backup image and the image 
descriptions are saved in the NetBackup catalog.

Vault duplicates images according to the filters you define, not any 
status code.

I had a similar problem (bpduplicate would get confused at times when an 
image spanned tapes). 

My problem was corrected by v5.1 MP5.

cheers, wayne

P.S.  We didn't need a copy of the daily digest attached to your post, 
Jonathan! ;-)

Courteney, Jonathan wrote, in part,  on 6/1/2006 4:40 AM:
> I am getting very confused over image duplication via the Vault option.
>
> My question is this, we duplicate are full backups on a daily basis
> after the backup schedule has finished each night. This in it's self
> works fine except if a backup image finishes with a status code 1
> "partial success" then the image is not duplicated and vault will exit
> with a status code 1 also. I had a conversation a while ago with veritas
> who indeed told me duplication can only occur on a backup image which
> has exited with a status of 0.
>
> I have now just been talking to a guy from Symantec who informs me this
> is not the case and status 0 and status 1 backups can be duplicated - so
> why are mine not working :( Has something changed in a Netbackup FP or
> MP ?
>
> Very confused on what I believe should be very simple question.
>
> Environment = Master server Solaris 8
>                 Netbackup 5.1 MP3
>
> Any help greatly received.
>
> Jonathan Courteney
>