# DE-R-004

> If both supplier and customer are located in Germany, the element "Seller post code" (BT-38) shall be provided.

Checked against Peppol BIS Billing 3.0 2026.5

Canonical: https://einvoicecheck.eu/rules/de-r-004

## Official rule text

If both supplier and customer are located in Germany, the element "Seller post code" (BT-38) shall be provided.