# F-LIB372

Source: https://xmlvalid.com/rules/F-LIB372

> PartyTaxScheme/TaxScheme 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: `(not(cac:PartyTaxScheme)) or cac:PartyTaxScheme/cac:TaxScheme`

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