In the case if we monitor ( if not then we should immediately add the site to Google Search Console ) the state of the site in Google Search Console we have to deal with a very thorough analysis of the state of our website and its potential problems that Google communicates to us. It is important here to pay attention to the messages that Search Console sends, but also to the state of indexation and the quality of the site for mobile devices. See also what Google Search Console is and how important it is in the process of analyzing a site in Google.
Errors indexing a page when it is changed or made can spice up hours of searching for problems. It is worthwhile for the website being created to be technically polished, which will save us a lot of time in case onsite problems start to occur.
In this post we will solve the problem of duplication within the site and the message : the user did not mark the canonical version of the page.
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In answering the question of what is a canonical URL, we must pay attention to the definition of a canonical link. Google gives a definition of canonicity : a page address that Google considers to be the most representative of the set of duplicate pages on your site.
For example, if your site has 2 URLs of the same subpage ( domain.com/links-canonical and domain.com/search-console/links-canonical ) Google selects one of them as canonical based on content and exhaustion of the subject matter. The one that is more relevant (relevant) to the topic will probably be selected as canonical by Google.
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In order to remove the problem of duplication and failure to establish the main version of the sub-page, first of all, the global canonical tag should be implemented throughout the site. In different CMS systems it looks similar you should set the canonical address for the domain accordingly through the record / rule :
<link rel="canonical" href="https://www.hauerpower.com/">
Then for each subpage we should also have a canonical designation next to their address. Such a procedure will eliminate for us additional and unwanted sub-pages that are not to be taken into account by Google.
In case there are two subpages, and one of them is marked as a duplicate or Google has chosen another version as the main one, we should set canonical targeting on the subpage that is not the preferred (main) one to the correct version of the subpage by writing down the canonical version designation of the subpage, i.e., "The canonical version":
<link rel=”canonical” href=”https://www.hauerpower.com/nasz-docelowy-adres-url” />
Then the subpage will point to the original and desired version of the subpage as the main one.
To determine the problem or if you have received a message, go to the Pages menu after logging into Search Console and find the message item
Then go to the problem and in the list of items enter each item.
We check the URL to find out what version the search engine chose.
After determining which version is treated as the main one, you should modify the canonical versions of the subpages accordingly (as we described above) and report the solution to the problem in GSC.
See also wordpress resources
The message indicates possible duplication problems within the site, i.e.: failure of the user to mark the preferred (main = canonical) version for the duplicate version of the sub-page. You should then perform the problem analysis procedure according to the process given above.