# BR-31

Quoted from a public specification. This page is not a validator, and it is not tax, legal, or accounting advice.

- Country: EU
- Syntax: UBL
- Severity: fatal
- Statement language: en
- Last verified: 2026-10-18

## Official statement

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

Source: https://docs.peppol.eu/poacc/billing/3.0/rules/ubl-tc434/BR-31/

Peppol BIS Billing 3.0, May 2026 release, EN 16931 model bound to UBL

Severity note: fatal, from the Flag column of the Peppol BIS Billing 3.0 UBL rules index retrieved 2026-10-18.

## Plain-language reading

Each Document level allowance (BG-20) must have a Document level allowance amount (BT-92). The message says "shall have" and starts with "Each". It ends with a period. It spells "Document level" with a space and no hyphen. The context is a document allowance on the invoice or the credit note, and the charge indicator comparison has spaces around =. The published test checks that cbc:Amount exists. It does not calculate the amount.

## What to change

Put a Document level allowance amount (BT-92) on each document allowance.

## Illustration

Illustration of the condition in the official statement. Not an example published by the source.

**Fails the stated condition.** A document allowance has no amount element.

**Passes the stated condition.** That allowance has an amount element.

## Published context and test

Copied from the source. Not reimplemented on this page.

```
/ubl:Invoice/cac:AllowanceCharge[cbc:ChargeIndicator = false()] | /cn:CreditNote/cac:AllowanceCharge[cbc:ChargeIndicator = false()]
```

```
exists(cbc:Amount)
```

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