document passes in adobe but fails in independent tool

[cleo2017]

Several documents pass the Accessibility test in Adobe, but when using a tool from ADA website - Tools to Check PDFs | Section508.gov  - (PDF Accessibility Checker (PAC 2), these same documents are failing on content, fonts and structure.

Now I can't figure out through Adobe how/where to fix all the problems when Adobe accessibility doesn't show them.

[Dov Isaacs]

“Adobe” isn't a product!

Acrobat Pro is a product. If this is what you used, which version and what tests within Acrobat Pro?

What did the accessibility report from Acrobat Pro DC (the latest version) indicate? Can you provide us with the original document and further information such that we can investigate?

          - Dov

[cleo2017]

Product: Adobe Acrobat DC, latest version downloaded yesterday.

Willing to send the original document, however, I see no way to attach pdf file to this post.

[Dov Isaacs]

Post it on a file sharing service or contact me on via the forum's private message mechanism and I'll give you my e-mail.

          - Dov

[cleo2017]

Here is a link to the original document:
Safety-or-Profit-John_D_Rowell-passed adobe acessibility check.pdf

I appreciate your offer of help.

[a_C_student · Accepted solution]

Hi Cleo, I have documented fixes to many PAC2 errors using Acrobat Pro. See https://taggedpdf.com/508-pdf-help-center/

[cleo2017]

Thank you.