UA1 Validator / PDF/UA-1 rules / 5-5

PDF/UA-1 · CLAUSE 5

Missing or malformed PDF/UA identifier

The XMP metadata does not declare that this file claims PDF/UA-1 conformance, or declares it with the wrong part number or namespace prefix.

Rule 5-5 ISO 14289-1 Object: PDFUAIdentification

Why it matters

Conformance checkers and assistive technology cannot tell that the file was produced as an accessible PDF. Many procurement and compliance workflows reject the file on this alone.

How to fix it

  • Add the PDF/UA identification schema to the document XMP metadata with pdfuaid:part set to 1.
  • In Acrobat Pro use the preflight fixup 'Add PDF/UA-1 entry' or apply the veraPDF metadata fixer.
  • Fix the underlying accessibility errors first: the identifier is a claim of conformance, not a fix.

What the standard says

Property "corr" of the PDF/UA Identification Schema shall have namespace prefix "pdfuaid"

Check your own PDF

Validate a file against PDF/UA-1 and see whether this rule fails in your document.

Open the validator Automate in CI 
curl -sS -X POST "https://api.ua1.dev/api/validate?format=compact&profile=ua1" \
  -F "file=@document.pdf"