This may be a lame question, but I have a requirement from a client that I need to export interactive PDF out of InDesign that when opened in Acrobat shows the PDF/UA Compliance as set. I searched the DOM but could not find any such property. So the question is, is this possible at all to do from InDesign? Is this really just about setting the property as shown in the Acrobat interface?
@Steve Werner is correct: The PDF identifier is applied in Acrobat, not in InDesign or its export settings.
But understand a key factor: the identifier doesn't actually certify anything because the process of validating a PDF for accessibility compliance can't be done by software alone. A human being must also evaluate the file and determine if accessibility requirements have been met.
Examples: software checker can only determine whether a file is tagged or not. Yes or No. But a human is still needed to determine whether they are the correct tags. We have sample of documents with the identifier but are all P tags (no headings, lists, etc.) and a couple that aren't even tagged at all -- but they have the compliance identifier!
So think of the PDF/UA identifier as being a self-certifying marker: YOU, after validating and examining the file, declare that is is compliant.
The bigger question: are you willing to state that in your opinion the file meets PDF/UA accessibility requirements? You willing to stand up in court about that? If so, then go ahead and put the identifier on the file. If you're not so sure, then I'd avoide putting it on the file.
Most likely, your client doesn't know much about accessibility if they're asking for the identifier, unless they too will review and validate the file.
Just IMHO.
--Bevi Chagnon
US Delegate to the ISO committees for PDF and PDF/UA
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