# BR-56

> Each Seller tax representative party (BG-11) shall have a Seller tax representative VAT identifier (BT-63).

Checked against Peppol BIS Billing 3.0 2026.5

Canonical: https://einvoicecheck.eu/rules/br-56

## Official rule text

Each Seller tax representative party (BG-11) shall have a Seller tax representative VAT identifier (BT-63).

## Why did my invoice fail BR-56?

Whenever a Seller tax representative party (BG-11) is present, it must include the Seller tax representative VAT identifier (BT-63), the VAT number under which the fiscal representative accounts for VAT on the seller's behalf. This identifier is required because the representative is the party liable for VAT in the relevant country.

## Common causes

- cac:TaxRepresentativeParty was given (name/address) but no cac:PartyTaxScheme/cbc:CompanyID (VAT ID).
- The VAT identifier was placed under the Seller party instead of the TaxRepresentativeParty.
- PartyTaxScheme was present but CompanyID was empty or lacked the VAT scheme.

## How do I fix it?

```
In cac:TaxRepresentativeParty/cac:PartyTaxScheme add <cbc:CompanyID>FR12345678901</cbc:CompanyID><cac:TaxScheme><cbc:ID>VAT</cbc:ID></cac:TaxScheme>.
```