warning UBL
[PEPPOL-COMMON-R047]-Italian VAT Code (Partita Iva) must be stated in the correct format
cbc:EndpointID[@schemeID = '0211'] | cac:PartyIdentification/cbc:ID[@schemeID = '0211'] | cbc:CompanyID[@schemeID = '0211']
u:checkPIVAseIT(normalize-space())
Source: Peppol BIS Billing 3.0 Schematron, UBL (OpenPeppol, docs.peppol.eu validation artefacts 3.0.21).
Invoice XML (UBL 2.1 Invoice/CreditNote or UN/CEFACT CII D16B, max 5 MB):
Validate