fatal UBL
[GR-R-005]-Greek Suppliers must provide the full name of the buyer
cac:AccountingCustomerParty[$isGreekSender]/cac:Party
string-length(./cac:PartyName/cbc:Name)>0
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