Allowance/charge percentage SHALL be provided when allowance/charge base amount is provided.
/ubl:Order/cac:AllowanceCharge[not(cbc:MultiplierFactorNumeric) and cbc:BaseAmount] | /ubl:Order/cac:OrderLine/cac:LineItem/cac:AllowanceCharge[not(cbc:MultiplierFactorNumeric) and cbc:BaseAmount]false()