errorfactur-x

FORMAT-003:Incorrect XML attachment filename

Factur-X XML must be named correctly.

Fix this in your source system

MANUAL

Factur-X requires the embedded XML to be named "factur-x.xml" (or "zugferd-invoice.xml" for ZUGFeRD). The PDF must be regenerated with the correctly named XML attachment. This cannot be fixed by editing the XML alone.

See the step-by-step instructions below to fix this error manually.

Why This Error Matters

Filename identifies the XML type.

How to Fix It

1

Check filename

factur-x.xml for Factur-X

2

Rename if needed

Exact filename required

Technical Details

PDF attachment filename check

Common Causes

  • Wrong filename
  • Missing attachment

Frequently Asked Questions

Factur-X XML must be named correctly.
Name XML attachment according to profile. Invoice Navigator can help identify and fix this issue.
Yes, FORMAT-003 is a critical error that must be fixed.

See Also

Factur-X Validator

Check your invoice now

Related Errors

FORMAT-002

PDF must be PDF/A format

Last updated: 19 January 2026

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