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Canonicalization Issues

When the same data on a Web Server is presented to a Search Engine with a different URL, that is considered a Canonicalization Issue. There are many types of Canonicalization Issues, with the most common being a Domain Canonicalization Issue.

Domain Canonicalization Issues

This occurs when your Web Server is serving the same data on different Subdomains. For example, http://www.mydomain.com and http://mydomain.com returning the same data would be a Domain Canonicalization Issue.