Rules / BR-02 · Markdown

BR-02

EN 16931-1 layer: en16931

Checked against Peppol BIS Billing 3.0 2026.5

What does BR-02 mean? The invoice is missing an Invoice number (BT-1). Every invoice must carry a unique identifier in cbc:ID.

Why did my invoice fail BR-02?

Every invoice must have an Invoice number (BT-1), a unique identifier assigned by the seller that distinguishes this invoice from all others they issue. It is essential for referencing, matching payments, and audit. In UBL it is the cbc:ID element directly under the Invoice root.

Official rule text

An Invoice shall have an Invoice number (BT-1).

Common causes

• cbc:ID at the invoice root is missing.
• The element is present but has an empty value.
• Draft or template invoices generated without an assigned number.
• A namespace error causes the ID to be read from the wrong element.

How do I fix it?

<cbc:ID>INV-2026-000123</cbc:ID>

Related rules

BR-01 · BR-03 · BR-04 · BR-05 · BR-06 · BR-07 · BR-08 · BR-09