[IBR-104-OM] - In a VAT breakdown (IBG-23) for VAT accounting currency, where the VAT category code (IBT-118) is 'S', the VAT category rate (IBT-119) MUST be 5.
IBR-104-OMubl:Invoice/cac:TaxTotal/cac:TaxSubtotal | cn:CreditNote/cac:TaxTotal/cac:TaxSubtotalnot($vatCategory='S') or ( cac:TaxCategory/cbc:Percent castable as xs:decimal and xs:decimal(cac:TaxCategory/cbc:Percent) = 5 )