Amount   (aka Invoice Amount)

The Amount field is a required field when entering a Vendor Invoice.   Any numeric value is allowed (the number can be zero, positive or negative).

The sum of Amounts entered into the Vendor Invoice Detail lines must equal the Invoice Amount entered on the Vendor Invoice Summary screen before the document can be submitted or posted.

When entering new Detail lines, the default Amount automatically populated is calculated as the Summary >> Invoice Amount less the sum of the existing Detail line Amounts.