Counterfoil rule note
Quoted from a public specification. This page is not a validator, and it is not tax, legal, or accounting advice.
An Invoice shall have a Specification identifier (BT-24).
Source: https://docs.peppol.eu/poacc/billing/3.0/rules/ubl-tc434/BR-01/
Peppol BIS Billing 3.0, May 2026 release, EN 16931 model bound to UBL
Severity note: fatal, from the Flag column of the Peppol BIS Billing 3.0 UBL rules index retrieved 2026-10-18.
An invoice must have a specification identifier (BT-24). The published test checks that cbc:CustomizationID is not blank. The official message and the index cell both end with a non-breaking space, a regular space, and a non-breaking space after the period. The stored statement drops that trailing whitespace. The message says "shall have". It does not name a VAT breakdown, an invoice line, an allowance, or a charge.
Fill cbc:CustomizationID with a non-empty specification identifier (BT-24).
Illustration of the condition in the official statement. Not an example published by the source.
Fails the stated condition. CustomizationID is missing or blank.
Passes the stated condition. CustomizationID contains a non-empty value.
Copied from the source. Not reimplemented on this page.
/ubl:Invoice | /cn:CreditNote
normalize-space(cbc:CustomizationID) != ''
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