BR-DE-27
XRechnung
WARNING
This is a German XRechnung rule (BR-DE) - a national requirement added on top of EN 16931 for invoices sent to German public authorities. It commonly concerns contact details, payment information or the buyer reference (Leitweg-ID).
How to fix it
- Read the requirement in the rule text below and add the missing element.
- Check the buyer reference (BT-10) carries a valid Leitweg-ID.
- Seller contact details (phone, email) are mandatory in XRechnung even though EN 16931 makes them optional.
Official rule text
In BT-42 sollen mindestens drei Ziffern enthalten sein.
Developers also reach this page searching for an “XRechnung validation error”, a “German e-invoice rejected” message, or how to correct a failed ZUGFeRD/Factur-X-style check — it's the same issue, explained above.
In short, in English: BT-42 must contain at least three digits.
Fix it faster
Paste your invoice XML in our free validator - every finding comes with its rule ID. Then generate, convert and render compliant invoices through one API.