EN 16931 rules 1.3.16 (UBL)

979 rules, version 1.3.16, published by CEN/TC 434, European Commission (EUPL 1.2, source). Checked with Peppol BIS Billing 3.0 Invoice, Peppol BIS Billing 3.0 Credit Note, France e-invoice (UBL), France e-credit note (UBL), XRechnung 3.0 Invoice (UBL), XRechnung 3.0 Credit Note (UBL) .