General information is provided in the Preceding Document References topic.

Elements

Element	Cardinality	Description
Billing Reference (`Invoice/BillingReference/InvoiceDocumentReference`)	0..n	A group for references to a preceding Document.
Preceding Invoice Reference (`Invoice/BillingReference/InvoiceDocumentReference/ID`)	1..1	Specify the number of the referenced document.
Preceding Invoice Reference UUID (`Invoice/BillingReference/InvoiceDocumentReference/UUID`)	1..1	Specify the UUID of the referenced Document.
Preceding Invoice Date (`Invoice/BillingReference/InvoiceDocumentReference/IssueDate`)	1..1	The date the reference Document was issued.

Country-Specific Topics

Malaysia: Supplier's Billing Reference Number
Serbia: Invoice Document Reference
Saudi Arabia: Supplier's Invoice Document Reference
Japan: Invoice Document Reference
Poland B2B: Preceding Invoice Reference

Example

<Invoice>
    <!-- code omitted for clarity -->
    <cac:BillingReference>
        <cac:InvoiceDocumentReference>
            <cbc:ID>INV-99887766</cbc:ID>
            <cbc:IssueDate>2024-09-30</cbc:IssueDate>
        </cac:InvoiceDocumentReference>
    </cac:BillingReference>
    <!-- code omitted for clarity -->
</Invoice>