Use this field to enter a quick payment for the invoice if paid at the time of the purchase. The Reference field, Payment Method field, and Cash Account field will appear allowing you to enter payment information.
For example, you could have written a check at the time of the purchase and want it indicated on the invoice.
Note: You can only enter one payment for the invoice using this method. All other payments (installments) must be entered and applied using the Payments window.