Counterfoil rule note
Quoted from a public specification. This page is not a validator, and it is not tax, legal, or accounting advice.
Seller trader name shall occur maximum once
Source: https://docs.peppol.eu/poacc/billing/3.0/rules/ubl-tc434/UBL-SR-10/
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 seller trader name shall occur at most once. The statement has no period and says shall. The flag is fatal. The context is the same string as BR-CO-18. The published test counts the seller party name. The comparison has a space before <= and a space after it.
Send at most one seller party name.
Illustration of the condition in the official statement. Not an example published by the source.
Fails the stated condition. The seller party has two party names.
Passes the stated condition. The seller party has one party name, or none.
Copied from the source. Not reimplemented on this page.
/ubl:Invoice | /cn:CreditNote
(count(cac:AccountingSupplierParty/cac:Party/cac:PartyName/cbc:Name) <= 1)
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