There's a bit of a control gap regarding POs and staff being able to submit invoices for vendors who have open POs, but without the PO number attached. It would be super helpful if there was an alert built in where the system could identify whether or not the chosen vendor has an open PO when an invoice is submitted and ask the user if they would like to attach. And/or show an alert on the invoice saying there is an open PO for that vendor in the system that the reviewers would also see.
Without this there's a lot of room for human error, especially when not all the same people are reviewing POs and invoices.
