More general information is provided in the VRBL: Standard Item IDs topic.

Elements

Name (Path)	Cardinality	Description
Standard Item Identification (`/Invoice/InvoiceLine/StandardItemIdentification`)	0..1	A group of elements providing information about standard item identification.
Standard Item Identification ID (`/Invoice/InvoiceLine/StandardItemIdentification/ID`)	1..1	An identifier based on a registered scheme.
Standard Item Identification ID (`/Invoice/InvoiceLine/StandardItemIdentification/ID @schemeID`)	1..1	The scheme to which the identifier belongs.

Restrictions

You must use values from the ISO 6523 ICD list for the @schemeID attribute.

Country-Specific configuration

Poland B2B: Global Trade Item Number

Example

<Invoice>
    <!-- code omitted for clarity -->
    <cac:InvoiceLine>
        <!-- code omitted for clarity -->
        <cac:StandardItemIdentification>
            <cbc:ID schemeID="0160">5012345679920</cbc:ID>
        </cac:StandardItemIdentification>
        <!-- code omitted for clarity -->
    </cac:InvoiceLine>
</Invoice>