What it means
The seller contact's email address (BT-43) in an XRechnung should contain exactly one @, with at least two characters on each side, no spaces, and no full stop directly next to the @ or at the start or end.
Why it matters
This is a warning, so the invoice is still accepted. It is worth fixing, because German recipients use this information to process the invoice automatically, and a portal or buyer may ask you to correct it.
How to fix it
Correct the email address in the company or sender settings of your invoicing software. Common mistakes are a missing @, two addresses in one field, a trailing full stop or a space. Enter one address only.
The rule as published
In BT-43 soll genau ein @-Zeichen enthalten sein, welches nicht von einem Leerzeichen, einem Punkt, aber mindestens zwei Zeichen auf beiden Seiten flankiert werden soll. Ein Punkt sollte nicht am Anfang oder am Ende stehen. Business terms: BT-43
Where this rule applies
| Rule set | Version |
|---|---|
| XRechnung 3.0 (UBL) | 3.0.2 |
| XRechnung 3.0 (UBL credit note) | 3.0.2 |
| XRechnung 3.0 (CII) | 3.0.2 |
Check your file
Drop your e-invoice to see whether BR-DE-28 still fails, and which other rules do.
Related rules
- BR-DE-7 Seller contact email is required
- BR-RO-L1006 Seller contact email must be 100 characters or fewer
- DE-R-007 A seller email address is required between German parties
- DE-R-028 Seller contact email address should be well formed
- BR-DE-30 Creditor identifier is required
- BR-DE-31 Account to be debited is required