This field captures a discount given by the vendor. If this field has a value, it is used in the invoice Total calculation.

This field is not mandatory but the system converts and extracted value to a valid amount and uses this value in the following validation calculation that is applied against all amount fields.

Invoice Total = Line item total + total tax + freight + miscellaneous charge – discount – withholding tax – ISR Retention

If line items are not mandatory then the amount fields can also be validation with the following formula.

Invoice Total = SubTotal + total tax + freight + miscellaneous charge – discount – withholding tax – ISR Retention

Where Total Tax is the total amount of all taxes on the document. This can include Tax Amount and any other country-specific tax fields.

The tolerance for the above calculations is set in the Settings > Invoice Processing > Global Settings > Tolerance Settings and the system applied the tolerance based on the tolerance group linked to the currency of the invoice.