UBL-CR-161: Do not include a city subdivision in the seller's address

What it means

In a UBL invoice or credit note, the seller (BG-4) has a postal address (BG-5) under cac:AccountingSupplierParty/cac:Party/cac:PostalAddress. This rule checks that this address has no cbc:CitySubdivisionName, a separate element for a district or neighbourhood within the city.

Why it matters

This is a warning, so the file is still accepted. The EN 16931 address has no field for a district inside a city, so the recipient's software normally ignores it and the buyer does not see it. Fix it when the district is part of how your address is written, or when you want a file without warnings.

How to fix it

In your invoicing software, put the district in an address line instead of a separate district field, then export again. In the XML this is the additional address line (BT-36). The city (BT-37) and post code (BT-38) stay in their own fields. If you build the XML yourself, delete cbc:CitySubdivisionName from cac:PostalAddress in the seller block.

The rule as published

A UBL invoice should not include the AccountingSupplierParty Party PostalAddress CitySubdivisionName

Where this rule applies