Currently if a duplicate invoice is entered through A/P, Skyward will alert the user that the invoice is already in the system. Unfortunately, if a check request is entered with a duplicate invoice number, it does not alert the user. We have run into duplicate payments as some invoices come to A/P for payment unaware that a teacher has also received it and enters a check request a month after A/P has already paid it. Neither person gets any kind of notice that the invoice in check request is already in the system. These duplicate payments are not good accounting practice.