CEN TC434 UBL ubl/examples test/testfiles test/Invoice-unit-UBL test/CreditNote-unit-UBL tc434-ubl TC434 UBL Invoice Invoice::urn:cen.eu:en16931:2017 ubl-invoice-2.1 tc434-ubl-cn TC434 UBL Credit Note CreditNote::urn:cen.eu:en16931:2017 ubl-creditnote-2.1 tc434-ubl-peppol TC434 UBL Example Invoice::urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0 ubl-invoice-2.1 tc434-ubl-peppol-cn TC434 UBL Example CreditNote::urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0 ubl-creditnote-2.1