[ibr-tdd-39] – The cac:PostalAddress (BG-08) element MUST NOT contain elements other than cac:Country.
ibr-tdd-39/pxs:TaxData/pxs:ReportedTransaction/pxs:ReportedDocument/cac:AccountingCustomerParty/cac:Party/cac:PostalAddresscount(*[not(self::cac:Country)]) = 0