# F-LIB034

Source: https://xmlvalid.com/rules/F-LIB034

> There should be either a StreetName or a Postbox for a StructuredDK address type

- 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: `(cbc:AddressFormatCode = 'StructuredDK') and ((not(cbc:StreetName) or normalize-space(cbc:StreetName) = '') and (not(cbc:Postbox) or normalize-space(cbc:Postbox) = ''))`

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