It's a problem for website owners and SEO professionals as there is no clear definition of duplicate content. What is known, however, is that duplicate content hurts rankings.
Duplicate content can exist when
In general, Google doesn't want to rank pages with duplicate content. And the Google bot will try to optimise the budget for a website or will simply guess which page the original page is.
The duplicate content audit uses different signals to identify potential issues with duplicated content.
A page will be flagged as duplicate if:
The nearly-identical flag happens when the text and content are very close.
This audit is triggered if the page has more than 50 unique words. Page with lesser content are excluded from this audit.
Resolving the duplicate content problem is highly dependent on why it happens that the same content appears twice
If if is a server problem, when an url is both available with and without slash, it can resolved by setting up the webserver configuration
Exact or nearly identical
Content that is nearly the same or published twice on a website can be removed when one of the 2 (or many) is identified as the original one.
In order to avoid losing out on traffic, a web professional should consult the web analytics to identify which one receives the most traffic.
Once the primary document is identified, a redirect should be created for the duplicate pages. this would allow any traffic that still comes to the duplicate URLs, to arrive at the original page.