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Financewolf / Rule guidance

The specification identifier is missing

BR-01 - Invoice and CreditNote documents need a non-empty CustomizationID identifying their specification.

How to fix it

Add cbc:CustomizationID beneath the document root. For this validator, use the Peppol BIS Billing 3 identifier shown below. It is distinct from the business-process ProfileID.

Example

<cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID>

Examples are illustrative fragments, not complete invoices. Validate the complete document after applying a fix.

Scope and source

Reviewed for Peppol BIS Billing 3.0.21 (May 2026), EN 16931 1.3.16. Guidance version 2026-09-06.1, checked 2026-09-06. Applies to the Invoice and CreditNote rulesets named by the validator.

Official Peppol rule and test

Guidance does not change the engine verdict. Other findings may need separate fixes. Validation does not certify legal or tax compliance or transmit a document over Peppol.

Validate your corrected invoiceValidation guide