[IBR-017-OM] - Buyer VATIN (IBT-048) MUST be present when the Invoice transaction type (BTOM-001) is a Self-billed Invoice/credit note (XX1XXXXXXXXXXXXXXXXX) or Invoice for import of services for RCM (XXXXXXXX1XXXXXXXXXXX) or Profit Margin Self-Invoice ( 00000000001000000000) or Import of Goods (XXXXXXXXXXXX1XXXXXXX).
IBR-017-OMubl:Invoice | cn:CreditNotenot($isSelfBilled or $isImportRCM or $isProfitMargin or $isImportGoods) or cac:AccountingCustomerParty/cac:Party/cac:PartyTaxScheme[cac:TaxScheme/cbc:ID='VAT']/cbc:CompanyID