# EHF-REMINDER-B00108

Source: https://xmlvalid.com/rules/EHF-REMINDER-B00108

> Element 'cac:AccountingCustomerParty' MUST be provided.

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

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