fatalEN 16931syntax binding ruleUBL
CompanyID (VAT Identifier) must be stated when providing the PartyTaxScheme/TaxScheme/ID.
A PartyTaxScheme is present without its CompanyID, so a tax scheme is declared with no number in it.
Add the identifier in PartyTaxScheme/cbc:CompanyID — the VAT number when TaxScheme/ID is VAT — or remove the PartyTaxScheme group.
UBL — context cac:PartyTaxScheme
exists(cac:TaxScheme/cbc:ID) and exists(cbc:CompanyID)
Nothing is stored, and the whole invoice is checked, not just this rule. A PDF only works if it is Factur-X / ZUGFeRD — a PDF with the invoice XML inside it.