[ibr-tdd-12] – The pxs:TaxAuthority (TDG-04) element MUST NOT contain elements other than cbc:ID (TDT-010) and cbc:Name (TDT-011).
ibr-tdd-12
pxs:TaxData/pxs:TaxAuthority
count(*[not(self::cbc:ID or self::cbc:Name)]) = 0