by Christian Estrup » Fri Feb 03, 2012 1:31 pm
Hi,
No, this is not possible at this time.
In any case, something like that would probably need a bit of careful thinking: First of all, "paid" isn't just a yes/no thing - an invoice can be partially paid, it can be partially or fully credited, etc..
Secondly - since the matching of payment(s) and/or credit note(s) against an invoice can be undone, you won't really be able to count on an invoice being registered as (possibly fully) paid as a 'final, unchangeable' state.
Best regards,