What should the filename be?

Exactly factur-x.xml (lowercase).

ZUG-FILENAME-001In your invoicing software

ZUGFeRD/Factur-X Wrong Embedded XML Filename

This is the rejection, word for word: „[ZUG-FILENAME-001] The embedded XML in your ZUGFeRD/Factur-X PDF has the wrong filename. It must be exactly factur-x.xml since ZUGFeRD 2.1.“

PDF/A-3 allows any attachment name, but ZUGFeRD 2.1+ mandates factur-x.xml (case-sensitive). Both /F and /UF in the filespec dictionary must match.

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

What we doRename the embedded XML to factur-x.xml and update fx:DocumentFileName XMP property.

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

/F (ZUGFeRD-invoice.xml)

After

/F (factur-x.xml)

What the finding looks likeExample

FindingStructure invalid · ZUG-FILENAME-001

From youA re-exported file

ThenRe-export

ProofSHA-256 and /verify link after the check

Often appears together with

ZUG-XMP-001ZUGFeRD/Factur-X PDF Missing or Invalid XMP Metadata