What causes the BR-DE-27 error?

This error occurs when the seller contact telephone (BT-42) contains fewer than three numeric digits. XRechnung requires telephone numbers to have at least three digits to be considered valid contact information.

How do I fix BR-DE-27?

Enter a complete telephone number with at least three digits. Use international format like +49 30 12345678 for German numbers. Remove any placeholder text or letters that are not part of the phone number.

What is a valid telephone number format?

Use international format: +[country code] [area code] [number]. For Germany: +49 30 12345678. The number should contain only digits, spaces, and optionally + for the country code prefix.

Can I use letters in the telephone field?

No, the telephone field should only contain numeric digits. Letters are not counted toward the minimum three digit requirement and will not be valid for machine processing.

Error codes · XRechnung · Germany

BR-DE-27Fixable here

Seller Contact Telephone Must Contain At Least Three Digits

This is the rejection, word for word: „[BR-DE-27] Contact telephone numbers must follow proper format guidelines. German XRechnung requires telephone numbers to be properly formatted for machine processing, typically with country code and without invalid characters.“

XPath: //cac:AccountingSupplierParty/cac:Party/cac:Contact/cbc:Telephone | The seller contact telephone number (BT-42) must contain at least three numeric digits. This ensures the telephone number is a valid, usable contact number.

What to have readyThe missing value from your purchase order, contract or bookkeeping.

What we doInvoice Navigator automatically fixes this Invoice compliance issue by updating the relevant XML elements (BR-DE-27).

Choose the rejected invoiceor drop it here

XRechnung XML or ZUGFeRD PDF. Checking is free · corrected file €1.90 · the first every 30 days is free · no sign-up.

If you enter it yourself in your invoicing software

Before

<Invoice>
  <!-- Issue: XRechnung requires seller contact telephone to contain at le -->
</Invoice>

After

<Invoice>
  <!-- Issue resolved per XRechnung (Germany) -->
</Invoice>

What the finding looks likeExample

FindingValue missing · BR-DE-27

Location//cac:PaymentMeans/cbc:PaymentMeansCode

From youThe missing value

ThenPassed

ProofSHA-256 and /verify link after the check

Often appears together with

BR-DE-01Invalid Leitweg-ID Format BR-DE-02Payment terms text recommended BR-DE-1Eine Rechnung (INVOICE) muss Angaben zu "PAYMENT INSTRUCTIONS" (BG-16)...