If you don't want your invoice numbers to reflect how many orders you ship, Quick Shopping Cart® lets you manually input an invoice number. When you do, that invoice number applied to your next order, and then each subsequent invoice number increases by one. When you manually input an invoice number, it must be greater than the previous one.
Invoice numbers can include no more than 10 digits. If you select an invoice number including fewer than 10 digits, zeroes display in place of the digits you leave out.