Counterfoil rule note
Quoted from a public specification. This page is not a validator, and it is not tax, legal, or accounting advice.
Value tax point date shall occur maximum once
Source: https://docs.peppol.eu/poacc/billing/3.0/rules/ubl-tc434/UBL-SR-49/
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.
The value tax point date shall occur at most once. The statement has no period and says shall. It is 45 characters. The flag is fatal. The context is the same string as BR-CO-18. The published test counts the invoice period description code. It does not count a date element. The count comparison has a space before <= and no space after it.
Send at most one value tax point date.
Illustration of the condition in the official statement. Not an example published by the source.
Fails the stated condition. The invoice has two value tax point dates.
Passes the stated condition. The invoice has one value tax point date, or none.
Copied from the source. Not reimplemented on this page.
/ubl:Invoice | /cn:CreditNote
(count(cac:InvoicePeriod/cbc:DescriptionCode) <=1)
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