Error code BR-DE-15
The buyer reference (Leitweg-ID) is missing
XRechnung invoices must contain the buyer reference (BT-10). For German public buyers, this is their Leitweg-ID.
The official rule
“Das Element "Buyer reference" (BT-10) muss übermittelt werden.”
Official text, in the language the rule set publishes it in.
Fields named: BT-10
Common causes
- The Leitweg-ID or buyer reference is not stored on the customer.
- A ZUGFeRD or Factur-X invoice for a business customer was checked as XRechnung: BR-DE rules only apply to XRechnung.
- The Leitweg-ID was mistyped or its hyphens were left out.
How to fix it
- Ask your customer for their Leitweg-ID or reference and fill it in as the buyer reference.
- For business customers who don't need XRechnung, check the file as the format it really is.
Where to fix it in your software
- sevdesk: Kontakte › Kontakt › E-Rechnung Standard › Leitweg-ID (help page)
- sevdesk: Weitere Optionen › Kundenreferenz / Leitweg-ID (help page)
- Lexware Office:
Ergänze im Kontakt die Leitweg-ID und die Lieferantennummer.
(help page)
From each provider's own help page, read on 25 October 2026. Menus can change; we are not linked to these providers.
Wrong vs. right (UBL)
Wrong
<cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode> <cac:AccountingSupplierParty>
Right
<cbc:DocumentCurrencyCode>EUR</cbc:DocumentCurrencyCode> <cbc:BuyerReference>BESTELLUNG-4711</cbc:BuyerReference> <cac:AccountingSupplierParty>