(ID# 436) This Accounts Payable option in Options Configuration allows you to receive a pop up warning message when trying to add a voucher for a vendor that is not on file. If this option is set to Yes, you receive a pop up message when trying to add a voucher for a vendor that is not in the vendor file. When this option is set to No, you continue to receive the warning message at the bottom of the New A/P Transactions window (ATMU) if the vendor is not in the vendor file for the voucher being added.