UBL-SR-19: Payee name shall occur maximum once, if the Payee is different from the Seller

The rule requires that within cac:PayeeParty, the payee name in cac:PartyName/cbc:Name occurs at most once, and that its value is not equal to the seller's cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:RegistrationName. Although the message says “maximum once”, the second part of the test cannot be satisfied if no payee name is present, so effectively exactly one cac:PartyName/cbc:Name is required and it must differ from the seller's registration name. A document violates this fatal rule when it has more than one payee name, no payee name, or a payee name equal to the seller's registration name.

In cac:PayeeParty, provide exactly one cac:PartyName/cbc:Name whose text value is different from the value in cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:RegistrationName. If the payee is the same as the seller, omit the cac:PayeeParty element entirely instead of duplicating the seller's name. Remove any duplicate cac:PartyName elements inside cac:PayeeParty.