# EHF-REMINDER-B05501

Source: https://xmlvalid.com/rules/EHF-REMINDER-B05501

> Element 'cbc:ID' MUST be provided.

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

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