# DE-R-020

> If both supplier and customer are located in Germany, the element "Debited account identifier" (BT-91) should contain a valid IBAN if code 59 SEPA is provided in "Payment means type code" (BT-81).

Checked against Peppol BIS Billing 3.0 2026.5

Canonical: https://einvoicecheck.eu/rules/de-r-020

## Official rule text

If both supplier and customer are located in Germany, the element "Debited account identifier" (BT-91) should contain a valid IBAN if code 59 SEPA is provided in "Payment means type code" (BT-81).