How will access to the same page through different links affect SEO?

Question

Search Engine Optimization

The page itself is the same, but it can be accessed through different categories. Accordingly, the links to it will be different, for example:
mysite.com/category_11/subcategory_1/page
and
mysite.com/category_20/subcategory_3/page
Something suggests that these links will conflict when searching.
Will this really be the case, and in general, how bad will it affect search engine optimization? Just making links like /categories/1, pages/1 is somehow not very (IMHO), it will be difficult to understand from the link what kind of site you are in.
But if this is already a bad idea for SEO, then figs with him, I'll redo it.
Thanks in advance.

Answer 1

These links will be considered duplicates, which is a priori very bad for SEO.
And gluing each link manually, taking into account all the categories that one post can belong to at the same time, will be very expensive, let's say.
If I were you, I would work out a structure in which links to the same material would not change and depend on the category, for example: site.com/your-article (whatever category it belongs to).
Do not be afraid that the user may get lost) Develop an adequate design, add, at worst, breadcrumbs, category labels in posts, etc.

Answer 2

For such things, there is a special canonical url meta tag
. Google was not even too lazy to write an article with examples:
https://support.google.com/webmasters/answer/13906...

Answer 3

Regular takes, fit in kindergarten seo