BR-31

Every document-level allowance (BG-20) must carry an amount (BT-92). An allowance or charge without an amount changes nothing, and then does not belong in the document.

Severity: Error
Applies to: CII, UBL
Rule set: v2026-01-31

Official rule text

Each Document level allowance (BG-20) shall have a Document level allowance amount (BT-92).

Why does BR-31 happen?

The discount is already folded into the line amounts and the group is created only as an explanation — with a reason, but no amount.

How do you fix BR-31?

Write the amount into cbc:Amount inside cac:AllowanceCharge in UBL, ram:ActualAmount inside ram:SpecifiedTradeAllowanceCharge in CII. On how amount, base amount and percentage relate, see PEPPOL-EN16931-R040.

In the XML

A UBL fragment. The CII path is named above — same change, different element names.

Fails

<cac:AllowanceCharge>
  <cbc:ChargeIndicator>false</cbc:ChargeIndicator>
  <cbc:AllowanceChargeReason>Rabatt</cbc:AllowanceChargeReason>
</cac:AllowanceCharge>

Fixed

<cac:AllowanceCharge>
  <cbc:ChargeIndicator>false</cbc:ChargeIndicator>
  <cbc:AllowanceChargeReason>Rabatt</cbc:AllowanceChargeReason>
  <cbc:Amount currencyID="EUR">50.00</cbc:Amount>
</cac:AllowanceCharge>

NormAPI provides technical validation, not tax or legal advice.