How do I tell if accounting module fails?

[Alex French]

Hi all,

I'm using an Exec-Program to do some user-specific stuff when a user
logs out of our network (i.e. it is invoked with "DEFAULT
Acct-Status-Type == Stop").

I'm trying to find a way for it to detect whether the database
accounting module has succeedded in updating the user's accounting
record or not (it will fail if the STOP packet is a duplicate). I
can't find an attribute that I can test to check the status of the
request at that stage. Any suggestions?

Alex