For most payments of invoices payable we recommend that you use the screen called Make Payments to Several Vendors. That screen allows you to quickly select payments for one or several vendors at one time. The primary advantage of the Make a Payment to One Vendor option is that it allows you to override the automatically calculated Discount and Return amounts.
This option can only be used to pay off invoices that are already in the system. If you want to write a check without having posted an invoice payable, either enter the invoice first, or choose Write a Check from the Checkbook Transactions menu.
After you perform this procedure, the checks for these payments can be printed with the procedure in the Print Checks chapter later in this section.