Allowance/charge base amount MUST be provided when allowance/charge percentage is provided.
PEPPOL-EN16931-R041pxs-taxdata:TaxData/pxs-taxdata:ReportedTransaction/pxs-taxdata:ReportedDocument/cac:AllowanceCharge[cbc:MultiplierFactorNumeric and not(cbc:BaseAmount)] | pxs-taxdata:DocumentLine/cac:AllowanceCharge[cbc:MultiplierFactorNumeric and not(cbc:BaseAmount)]false()