# BR-DEC-02

> The allowed maximum number of decimals for the Document level allowance base amount (BT-93) is 2.

Checked against Peppol BIS Billing 3.0 2026.5

Canonical: https://einvoicecheck.eu/rules/br-dec-02

## Official rule text

The allowed maximum number of decimals for the Document level allowance base amount (BT-93) is 2.

## Why did my invoice fail BR-DEC-02?

The Document level allowance base amount (BT-93), the amount the allowance percentage is applied to, may carry no more than two decimals. This keeps the base consistent with the resulting allowance amount so that base x percentage reconciles at 2-decimal precision.

## Common causes

- Emitting a base amount with more than 2 decimals from an intermediate calculation
- Copying a high-precision net figure into cbc:BaseAmount unrounded
- Currency conversion producing 4-6 decimal intermediate values

## How do I fix it?

```
Round the base before output: <cbc:BaseAmount currencyID="EUR">1000.00</cbc:BaseAmount> in the document-level allowance cac:AllowanceCharge.
```