Use the OriginCountry/IdentificationCode subelement of the InvoiceLine element to model this information.

More information is provided in the Country of Origin topic.

Example

<Invoice>
    <!-- code omitted for clarity -->
    <cac:InvoiceLine>
        <!-- code omitted for clarity -->
        <cac:OriginCountry>
            <cbc:IdentificationCode>AR</cbc:IdentificationCode>
        </cac:OriginCountry>
        <!-- code omitted for clarity -->
    </cac:InvoiceLine>
</Invoice>