Documents here are pdf, word and not CAD docs.
We have custom Engineering specs document template, which is a pdf and looking to have auto association created for these pdf with wt part.
Interesting that nobody has responded yet.
Are you loading the documents into Windchill as WTDocuments? If yes, then you would likely use the Reference link. If you look at the WTPart information page, the link to the document should be created in the "References Documents" table.
I'm digging up this old post.
I also want to automatically associate documents (not CAD) to articles.
associating them one by one is much too long and tedious