# F-INV297

Source: https://xmlvalid.com/rules/F-INV297

> No more than one PartyLegalEntity class may be present

- Level: error
- Rule sets: OIOUBL 2.1 Invoice rules (Denmark) 1.17.2
- Context: `doc:Invoice/cac:Signature/cac:SignatoryParty`
- Test: `count(cac:PartyLegalEntity) > 1`

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