PDF-01fatal
How to fix PDF-01
The PDF cannot be read
A check of the PDF of a ZUGFeRD or Factur-X invoice, not of its XML. It runs when you upload a PDF; the embedded XML then gets the XSD and EN 16931 checks (XRechnung: also the KoSIT rules). Check your PDF with the ZUGFeRD validator or the Factur-X validator. What the PDF check covers.
What this rule checks
The file starts like a PDF, but its structure (cross-reference table, objects or the embedded file stream) cannot be parsed, so no invoice XML can be taken from it.
How to fix it
Export the PDF again from the invoicing software, or repair it with a PDF tool, and check that it opens in a PDF viewer.
Related rules
Validate your invoice
Upload your corrected invoice to check it passes PDF-01 and all other ZUGFeRD / Factur-X PDF checks and EN 16931 rules. Free, instant, no signup.