problem will not always be

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Once you've identified which page is the strongest cannibalizer (consider inbound links pointing to the pages, organic visibility through other terms, and historical traffic as signals to help you make a decision), simply remove the others and 301 redirect your URLs to the remaining page.

This is usually the simplest way to solve cannibalization problems.

Also, be sure to update any internal links pointing to the pages you've removed, but other than that, you should see the removed URLs drop in Google's index within a few weeks.

Canonicalization
Sometimes, you don't have the option to remove cannibalized pages and just keep one.

It could be because it's a page dedicated to a PPC campaign, a germany mobile database great piece of content from a user experience perspective, or your CMS restrictions are causing page duplication, or something else entirely.

But when this is the case, consider using canonicalization to help you troubleshoot the issues.

Doing so means you can select one page as the primary page, which indicates that it will rank in search results and ensures that ranking signals such as link equity will be attributed to the page with the canonical URL.

None of the pages will need to be deleted, and will remain accessible to users.