[BR-AE-10]-A VAT Breakdown (BG-23) with VAT Category code (BT-118) "Reverse charge" shall have a VAT exemption reason code (BT-121), meaning "Reverse charge" or the VAT exemption reason text (BT-120) "Reverse charge" (or the equivalent standard text in another language).
Stored validation assertion
(../ram:ExemptionReason) or (../ram:ExemptionReasonCode)