This field contains the total amount due for payment on the current invoice. This field and all other amount fields are extracted using the Amount Group Locator. This locator also extracts basic tax fields. For more information on the Amount Group Locator, see the Help for Transformation Designer.

This field is mandatory unless a Validation Activity user applies an Invalid Reason to the field. For example, the INVOICE AMOUNTS DO NOT ADD UP invalid reason explains why this field is blank. When an invalid reason is applied, a blank value is allowed and the invoice is forced through processing. If no invalid reason is selected, the field is mandatory and cannot have a value of zero.

When all of the amounts extracted and added together, this is the Invoice Total.

The system converts any 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 are validated 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. The system applies the tolerance based on the tolerance group linked to the currency of the invoice.