Message

An Invoice shall contain the Seller name (BT-27).

Context
/ubl:Invoice | /cn:CreditNote
Test
(cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:RegistrationName) !=''
Usage
/ ubl:Invoice / cac:AccountingSupplierParty / cac:Party / cac:PartyLegalEntity / cbc:RegistrationName
/ ubl:CreditNote / cac:AccountingSupplierParty / cac:Party / cac:PartyLegalEntity / cbc:RegistrationName