[aligned-ibrp-aa-07]-A VAT breakdown (ibg-23) with VAT Category code (ibt-118) "Reduced rate" MUST not have a VAT exemption reason code (ibt-121) or VAT exemption reason text (ibt-120).
aligned-ibrp-aa-07/*/cac:TaxTotal/cac:TaxSubtotal/cac:TaxCategory[normalize-space(cbc:ID) = 'AA'][cac:TaxScheme/normalize-space(upper-case(cbc:ID))='VAT']not(cbc:TaxExemptionReason) and not(cbc:TaxExemptionReasonCode)