Rules / DE-R-026 · Markdown

Peppol BIS Billing 3.0 · rule

DE-R-026

Layer peppol·Checked against Peppol BIS Billing 3.0 2026.5

What does DE-R-026 mean? 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.

Why did my invoice fail DE-R-026?

On domestic German invoices, if the Invoice type code (BT-3) is 384 (Corrected invoice), a PRECEDING INVOICE REFERENCE group (BG-3) should be provided at least once. A correction is only interpretable if the receiver knows which earlier invoice it corrects. In UBL BG-3 is the cac:BillingReference/cac:InvoiceDocumentReference block.

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.

Common causes

• Type code 384 used without any cac:BillingReference element
• The corrected invoice's number is only mentioned in a free-text note
• The reference exists but is placed in cac:OrderReference or cac:AdditionalDocumentReference instead

How do I fix it?

<cac:BillingReference>
  <cac:InvoiceDocumentReference>
    <cbc:ID>RE-2026-0042</cbc:ID>
    <cbc:IssueDate>2026-05-30</cbc:IssueDate>
  </cac:InvoiceDocumentReference>
</cac:BillingReference>

Related rules

DE-R-001 · DE-R-002 · DE-R-003 · DE-R-004 · DE-R-005 · DE-R-006 · DE-R-007 · DE-R-008