For domestic transactions between Swedish trading partners, credit transfer should be indicated by PaymentMeansCode="30"
//cac:PaymentMeans[//cac:AccountingSupplierParty/cac:Party[cac:PostalAddress/cac:Country/cbc:IdentificationCode = 'SE'] and //cac:AccountingCustomerParty/cac:Party[cac:PostalAddress/cac:Country/cbc:IdentificationCode = 'SE'] and (cbc:PaymentMeansCode = normalize-space('31'))]false()