Select the Payment terms that apply. This standard value is taken from the customer register, but can be temporarily modified for a particular invoice. The payment terms must be registered in the Terms and Conditions procedure in the Global Settings.
You can also enter an optional text in this field by entering a zero (0) and then pressing Tab. In the first portion of the field you enter an optional payment term. In the second portion you enter the grace period in number of days.
The payment term is printed on the invoice.