Google May See Web Pages As Duplicates if URLs Too Similar
https://www.searchenginejournal.comGoogle uses a predictive method to detect duplicate content based on URL patterns, which could lead to pages being incorrectly identified as duplicates.
In order to prevent unnecessary crawling and indexing, Google tries to predict when pages may contain similar or duplicate content based on their URLs.
When Google crawls pages with similar URL patterns and finds they contain the same content, it may then determine all other pages with that URL pattern have the same content as well.
Unfortunately for site owners that could mean pages with unique content get written off as duplicates because they have the same URL pattern as pages that are actual duplicates. Those pages would then be left out of Google’s index.
