DE-R-015
The element "Buyer reference" (BT-10) shall be provided.
What does this rule mean?
The buyer reference (BT-10) is missing — for XRechnung this is the Leitweg-ID.
The Leitweg-ID routes the invoice to the correct public authority and is mandatory for XRechnung.
- BT-10
- Buyer reference (e.g. the Leitweg-ID)
Official rule message (standard)
The element "Buyer reference" (BT-10) shall be provided.
Where the rule applies
Syntax: UBL
Affected element (XPath):
(/ubl-invoice:Invoice | /ubl-creditnote:CreditNote)[$supplierCountryIsDE and $customerCountryIsDE]
Technical test
The rule passes when this Schematron expression holds true:
cbc:BuyerReference[boolean(normalize-space(.))]How to fix it
A missing or incorrect business entry only you can supply. Add or correct it, then re-check.
Enter the Leitweg-ID as the BuyerReference.
Correct the affected entry in your XML, then re-check the invoice. Validation runs locally in your browser — your file never leaves your machine.
Check an e-invoice here
Drop an XML or ZUGFeRD PDF file here. Validation runs locally in your browser against EN 16931 — your file never leaves your machine.