fatalPeppol BIS Billing 3.0profileUBL
Greek Suppliers that send an invoice through the PEPPOL network to a greek buyer must use a correct TIN number as an electronic address according to PEPPOL Electronic Address Identifier scheme (SchemeID 9933)
The Greek buyer's Peppol electronic address is not a TIN under scheme 9933.
Set the buyer's cbc:EndpointID to their Greek TIN with schemeID="9933".
UBL — context cac:AccountingCustomerParty[$isGreekSenderandReceiver]/cac:Party/cbc:EndpointID
./@schemeID='9933' and u:TinVerification(.)