[IS-R-002]-If seller is icelandic then it shall contain sellers legal id — Ef seljandi er Ãslenskur þá skal reikningur innihalda Ãslenska kennitölu seljanda (BT-30).
exists(cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:CompanyID) and cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:CompanyID/@schemeID = '0196'