Multiple allowances on one item

[WorkProg]

An item with multiple allowances seems to be allowed by the standard AFAIK, but is rejected by this validator with "ActualAmount should exist maximum once".
The offending line is probably

eInvoicing-EN16931/cii/schematron/preprocessed/EN16931-CII-validation-preprocessed.sch

Line 492 in 4f2a818

<assert id="CII-SR-440" flag="fatal" test="count(ram:GrossPriceProductTradePrice/ram:AppliedTradeAllowanceCharge/ram:ActualAmount) &lt;= 1">[CII-SR-440] - ActualAmount should exist maximum once</assert>

as this only checks that there is one ActualAmount per item but not per allowance (AppliedTradeAllowanceCharge) on an item.

<ram:SpecifiedLineTradeAgreement>
  <ram:GrossPriceProductTradePrice>
    <ram:ChargeAmount>30.0000</ram:ChargeAmount>
    <ram:BasisQuantity unitCode="C62">1.0000</ram:BasisQuantity>
    <ram:AppliedTradeAllowanceCharge>
      <ram:ChargeIndicator>
        <udt:Indicator>false</udt:Indicator>
      </ram:ChargeIndicator>
      <ram:ActualAmount>3.0000</ram:ActualAmount>
      <ram:Reason>Voucher Name</ram:Reason>
    </ram:AppliedTradeAllowanceCharge>
    <ram:AppliedTradeAllowanceCharge>
      <ram:ChargeIndicator>
        <udt:Indicator>false</udt:Indicator>
      </ram:ChargeIndicator>
      <ram:ActualAmount>2.0000</ram:ActualAmount>
    </ram:AppliedTradeAllowanceCharge>
  </ram:GrossPriceProductTradePrice>
  <ram:NetPriceProductTradePrice>
    <ram:ChargeAmount>25.0000</ram:ChargeAmount>
    <ram:BasisQuantity unitCode="C62">1.0000</ram:BasisQuantity>
  </ram:NetPriceProductTradePrice>
</ram:SpecifiedLineTradeAgreement>