Validation rules

BR-DE-27

The seller contact phone number (BT-42) should contain at least three digits.

Rule
BR-DE-27official EN 16931 / XRechnung rule
Severity
warning
Business term
BT-42 — Seller contact phone
Field in your JSON
invoice.seller.contact.phone

How to fix it

Use a real phone number in invoice.seller.contact.phone.

BR-DE-27 auf Deutsch — was bedeutet der Fehler?

Die Telefonnummer der Ansprechperson (BT-42) soll mindestens drei Ziffern enthalten. Der Validator meldet eine Warnung.

So beheben Sie den Fehler

Verwenden Sie eine echte Telefonnummer in invoice.seller.contact.phone.

Official sources

Every 422 from the API lists the rule id, the path in your request JSON, a plain-language message and a suggested fix — see the docs overview for the report format.