Error codes · PEPPOL_BIS · Germany

DE-R-022In your invoicing software

Duplicate attachment filename. All attached documents in German invoices must have unique filenames (case-insensitive) i

This is the rejection, word for word: „[DE-R-022] Duplicate attachment filename. All attached documents in German invoices must have unique filenames (case-insensitive) in element BT-125.“

What to have readyNothing. The file has to be re-exported from your invoicing software; we check it again afterwards.
What we doDuplicate attachment filename. All attached documents in German invoices must have unique filenames (case-insensitive) in element BT-125.
What the finding looks likeExample
FindingStructure invalid · DE-R-022
Location//cac:Delivery/cac:DeliveryLocation/cac:Address/cbc:CityName
From youA re-exported file
ThenRe-export
ProofSHA-256 and /verify link after the check
Fix DE-R-022: Duplicate attachment filename. All attached documents in German invoices must have unique filenames (case-insensitive) i — Cause & Solution