# PEPPOL-EN16931-CL003

Source: https://xmlvalid.com/rules/PEPPOL-EN16931-CL003

> Reason code MUST be according to UNCL 7161 D.16B.

- Level: error
- Rule sets: Peppol BIS Billing 3.0 rules 3.0.21
- Context: `cac:AllowanceCharge[cbc:ChargeIndicator = 'true']/cbc:AllowanceChargeReasonCode`
- Test: `some $code in $UNCL7161 satisfies normalize-space(text()) = $code`

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