Is DE-R-028 a critical error?

DE-R-028 is a warning that may not always cause rejection, but it indicates a potential compliance issue that should be addressed.

Can DE-R-028 be automatically fixed?

DE-R-028 requires manual correction. Review the fix steps above for guidance.

Error codes · PEPPOL_BIS · Germany

DE-R-028In your invoicing software

Invalid email format. The seller contact email (BT-43) must contain exactly one @ sign with at least two characters on e

This is the rejection, word for word: „[DE-R-028] Invalid email format. The seller contact email (BT-43) must contain exactly one @ sign with at least two characters on each side, and no dots at start or end.“

What to have readyNothing. The file has to be re-exported from your invoicing software; we check it again afterwards.

What we doInvalid email format. The seller contact email (BT-43) must contain exactly one @ sign with at least two characters on each side, and no dots at start or end.

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.

What the finding looks likeExample

FindingStructure invalid · DE-R-028

Location//cac:AccountingSupplierParty/cac:Party/cac:Contact/cbc:ElectronicMail

From youA re-exported file

ThenRe-export

ProofSHA-256 and /verify link after the check