[ibr-tdd-37] – The cac:AccountingCustomerParty (BG-07) element MUST NOT contain elements other than cac:Party.
ibr-tdd-37
/pxs:TaxData/pxs:ReportedTransaction/pxs:ReportedDocument/cac:AccountingCustomerParty
count(*[not(self::cac:Party)]) = 0