Would be great if there was a switch that allow for a pop-up when you enter a duplicate invoice number.
Something to check if you’ve used that invoice number on a different PO (but same vendor) before? Would you put a date range on the check (say last 12 months)? Not sure you’d want to check against all time.
Date range would be good. Problem is when vendors give you an invoice when they deliver and another by email and another by hardcopy in the mail I invariably end up entering an invoice twice.
I end up running the PO Vendor Reconciliation report, a lot.