# EHF-REMINDER-B10402

Source: https://xmlvalid.com/rules/EHF-REMINDER-B10402

> Element 'cac:TaxScheme' MUST be provided.

- Level: error
- Rule sets: EHF Reminder 3.0 rules (Norway) release 2026-09-29
- Context: `/ubl:Invoice/cac:TaxRepresentativeParty/cac:PartyTaxScheme`
- Test: `cac:TaxScheme`

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