Read only. The order in which the values appear in the Billing Terms dropdown list in records. This field can be directed by dragging lines up or down in the table and dropping them.
The possible discount available, as a percentage of the total invoice value. At present this is a notational field only and has no impact on system calculations.
The number of days after the invoice date when the invoice is considered due and payable. When you select a value in the Billing Terms dropdown list the Invoice Due field is calculated by default as the Invoice Date plus the number of days entered here.