[UBL-CR-511]-A UBL invoice should not include the TaxTotal TaxSubtotal TaxCategory TaxScheme CurrencyCode
UBL-CR-511
/ubl:Invoice | /cn:CreditNote
not(cac:TaxTotal/cac:TaxSubtotal/cac:TaxCategory/cac:TaxScheme/cbc:CurrencyCode)