when opening a PDF/A in Acrobat 9, the viewer will automatically switch to PDF/A view (default behavior). This is determined by the GTS Key, besides some other entries, that is present in such PDFs. However, to be sure if the file is what it claims you have to run it through an analyze engine like Acrobat Preflight or other 3rd party products.
Thanks, Peter. I understand that PDF/a can archive metadata. We have software that exports as PDF/a and archives inputted index fields, and I am trying to check if those index fields are saved within the PDF. Should that be viewable under File -> Properties -> Additional Metadata?Object metadata can be viewed by selecting an object with the touchup tool selecting "Properties" with a right-click.You can also check out callas pdfaPilot 2 (www.callassoftware.com) and it's metadata browser. Here a webinar about metadataRegards,Peter