Let's say there's a site with products. Each page product links to a page with a form to ask for more information. Let's say that URL is like:
XXX is the product code. So there are thousand of pages apparently with same 'content' (just a form, about 8 fields and a submit button).
Internally, the XXX is included in the form so I know what product the users wants info. But search engines detect this as duplicated content (because the form is the same).
How can I make clear the pages are different?
About canonical URLs
Usually, you have to provide a canonical URL in those case, to point the most important page of a group of duplicated pages. But in this case there's no point because all are equally important. Because of this, pages have a canonical URL metatag with a self-reference.
The only option I see is to include the product name in the title page and form header, so they are slightly different. Additionally, they may appear on search results when a user search for that product.
Is there any better approach?