Use the Enter Vendor Pre-Payment screen to enter payments made to a vendor before receiving an invoice from the vendor. When you save a pre-payment, ProContractor creates a vendor invoice for that pre-payment and uses the transaction date and a two-digit sequence number to identify the invoice. The sequence number is based on the order the vendors are entered in the Vendor grid on the Enter Vendor Pre-Payment screen. When you save the pre-payment, the transaction date of the pre-payment (in the format YYYYMMDD) and the two-digit sequence number are appended to the text "Prepayment" to create the invoice number.

For example, suppose you create a pre-payment for two vendors, Vendor A and Vendor B, where Vendor A is entered first. The transaction date is April 29, 2013. The invoice number for the invoice generated for Vendor A will be Prepayment2013042901. The two-digit sequence number is 01 because Vendor A is listed first in the Vendor grid in the Enter Vendor Pre-Payment screen. The invoice number for the invoice generated for Vendor B will be Prepayment2013042902, because Vendor B is listed second in the Vendor grid.