ubl-invoice:Invoice/cac:AllowanceCharge | ubl-invoice:Invoice/cac:InvoiceLine/cac:AllowanceCharge | ubl-creditnote:CreditNote/cac:AllowanceCharge | ubl-creditnote:CreditNote/cac:CreditNoteLine/cac:AllowanceCharge

not(cbc:MultiplierFactorNumeric and cbc:BaseAmount) or u:slack(if (cbc:Amount) then cbc:Amount else 0, (xs:decimal(cbc:BaseAmount) * xs:decimal(cbc:MultiplierFactorNumeric)) div 100, 0.02)

ram:SpecifiedTradeAllowanceCharge

not(ram:CalculationPercent and ram:BasisAmount) or u:slack(if (ram:ActualAmount) then ram:ActualAmount else 0, (xs:decimal(ram:BasisAmount) * xs:decimal(ram:CalculationPercent)) div 100, 0.02)