# F-LIB354

Source: https://xmlvalid.com/rules/F-LIB354

> PostalAddress/AddressFormatCode is mandatory in TaxRepresentativeParty

- Level: error
- Rule sets: OIOUBL 2.1 Invoice rules (Denmark) 1.17.2, OIOUBL 2.1 Credit Note rules (Denmark) 1.17.2, OIOUBL 2.1 Reminder rules (Denmark) 1.17.2
- Test: `cac:PostalAddress and cac:PostalAddress/cbc:AddressFormatCode and (normalize-space(cac:PostalAddress/cbc:AddressFormatCode) != '')`

Validate a document against these rules: https://xmlvalid.com/validate