fatalPeppol BIS Billing 3.0profileUBL
When Supplier is Greek, the MARK Number must be a positive integer
The MARK number is not a positive integer.
Send the numeric MARK exactly as myDATA returned it, with no prefix or separators.
UBL — context cac:AdditionalDocumentReference[$isGreekSender and ( /*/cac:AccountingSupplierParty/cac:Party/cac:PostalAddress/cac:Country/cbc:IdentificationCode = 'GR') and cbc:DocumentDescription = '##M.AR.K##']/cbc:ID
matches(.,'^[1-9]([0-9]*)')