# DE-R-026

> If both supplier and customer are located in Germany, and if "Invoice type code" (BT-3) contains the code 384 (Corrected invoice), "PRECEDING INVOICE REFERENCE" (BG-3) should be provided at least once.

Checked against Peppol BIS Billing 3.0 2026.5

Canonical: https://einvoicecheck.eu/rules/de-r-026

## Official rule text

If both supplier and customer are located in Germany, and if "Invoice type code" (BT-3) contains the code 384 (Corrected invoice), "PRECEDING INVOICE REFERENCE" (BG-3) should be provided at least once.