# PEPPOL-EN16931-R010

> The Buyer electronic address (BT-49) must be provided. Add cac:AccountingCustomerParty/cbc:EndpointID with its schemeID (electronic address scheme).

Checked against Peppol BIS Billing 3.0 2026.5

Canonical: https://einvoicecheck.eu/rules/peppol-en16931-r010

## Official rule text

Buyer electronic address MUST be provided

## Why did my invoice fail PEPPOL-EN16931-R010?

The Buyer electronic address (BT-49) must be present. This is the Peppol endpoint identifier used to deliver the invoice to the buyer, so it is mandatory for routing; it lives in cac:AccountingCustomerParty/cac:Party/cbc:EndpointID with a scheme in the @schemeID attribute.

## Common causes

- cbc:EndpointID is missing from the customer party.
- The schemeID attribute (e.g. 0088 for GLN, 9930 for DE VAT) is absent.
- The buyer's registered Peppol participant identifier was never captured in the source system.

## How do I fix it?

```
<cac:AccountingCustomerParty><cac:Party><cbc:EndpointID schemeID="0088">7300010000001</cbc:EndpointID></cac:Party></cac:AccountingCustomerParty>
```