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UBL-SR-18

Buyer VAT identifier shall occur maximum once

error: the document is invalid Peppol documentation ↗

What the rule checks

As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.

EN 16931 rules (UBL) 1.3.17 EN 16931 rules 1.3.16 (UBL) 1.3.16 EXTENDED-CTC-FR rules (UBL) 1.4.0.04 Romanian RO e-Factura rules (UBL) 1.0.9
Context
/ubl:Invoice | /cn:CreditNote
Test
(count(cac:AccountingCustomerParty/cac:Party/cac:PartyTaxScheme[cac:TaxScheme/upper-case(cbc:ID)='VAT']/cbc:CompanyID) <= 1)

Checked with EN 16931 Invoice (UBL), EN 16931 Credit Note (UBL), Croatia eRačun Invoice (UBL), Croatia eRačun Credit Note (UBL)