UBL-SR-21: A separate payee needs a different name and at most one registration number

What it means

When an invoice names a payee (BG-10), someone other than the seller who receives the money, the rule checks two things. The payee may have no more than one company registration number (BT-61). The name comparison must find at least one payee name (BT-59) that differs from a seller registered name (BT-27). It fails if either name is missing or no such pair differs.

Why it matters

A payee block is meant for a different party that gets paid, such as a factoring company.

How to fix it

Check the payee details in your invoicing software. If you are the one being paid, clear them so that no payee is exported. If someone else is paid, enter their own name and keep at most one registration number. Make sure the seller's registered name is also present. In the XML this is cac:PayeeParty, with its name in cac:PartyName/cbc:Name and at most one cac:PartyLegalEntity/cbc:CompanyID; the seller's registered name is in cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:RegistrationName.

The rule as published

Payee legal registration identifier shall occur maximum once, if the Payee is different from the Seller

Where this rule applies