[ibr-tdd-35] Exactly 1 Invoice total TAX amount (ibt-110) MUST be provided for Document currency code (ibt-005)
ibr-tdd-35
/pxs:TaxData/pxs:ReportedTransaction/pxs:ReportedDocument
count(cac:TaxTotal[cbc:TaxAmount/@currencyID = $dcc]) = 1