# BR-41

> Each Invoice line allowance (BG-27) shall have an Invoice line allowance amount (BT-136).

Checked against Peppol BIS Billing 3.0 2026.5

Canonical: https://einvoicecheck.eu/rules/br-41

## Official rule text

Each Invoice line allowance (BG-27) shall have an Invoice line allowance amount (BT-136).

## Why did my invoice fail BR-41?

Every Invoice line allowance (BG-27) must carry an Invoice line allowance amount (BT-136), the value of the discount applied to that specific line before VAT. Without it the line's net amount and the totals cannot be computed correctly.

## Common causes

- Line allowance added with only a percentage/reason and no cbc:Amount
- Amount placed on cbc:BaseAmount instead of cbc:Amount within the line's AllowanceCharge
- Line-level discount emitted with an empty amount

## How do I fix it?

```
Add the amount to the line's AllowanceCharge (ChargeIndicator=false): <cac:InvoiceLine>...<cac:AllowanceCharge><cbc:ChargeIndicator>false</cbc:ChargeIndicator><cbc:Amount currencyID="EUR">5.00</cbc:Amount>...</cac:AllowanceCharge></cac:InvoiceLine>
```