Rules / BR-31 · Markdown

BR-31

EN 16931-1 layer: en16931

Checked against Peppol BIS Billing 3.0 2026.5

What does BR-31 mean? Each Document level allowance (BG-20) shall have a Document level allowance amount (BT-92).

Why did my invoice fail BR-31?

Every Document level allowance (BG-20) must carry a Document level allowance amount (BT-92), the monetary value of the discount before VAT. Without an amount the allowance cannot be totalled into the document-level allowance sum or the VAT breakdown.

Official rule text

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

Common causes

• An allowance group was added (reason/percentage only) without populating cbc:Amount
• The amount was placed on cbc:BaseAmount or cbc:MultiplierFactorNumeric but not on cbc:Amount
• Zero-value allowance emitted with an empty amount element

How do I fix it?

Add the allowance amount to the document-level AllowanceCharge (ChargeIndicator=false): <cac:AllowanceCharge><cbc:ChargeIndicator>false</cbc:ChargeIndicator><cbc:Amount currencyID="EUR">50.00</cbc:Amount>...</cac:AllowanceCharge>

Related rules

BR-01 · BR-02 · BR-03 · BR-04 · BR-05 · BR-06 · BR-07 · BR-08