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As a result of many factors, it is possible that a page or item can have a claim on more than one friendly URL. This can occur if the URL, navigation or page title of a page or content item is changed or renamed or if a page is moved from one location to another in the navigation structure. Whenever a page or content item is saved, a friendly URL for it is calculated — if any changes occur to the friendly URL of a page or content item, it receives a new friendly URL based on the current circumstances and also keeps the previous URL(s) it once had which now act as redirects. This is explained in more detail in Maintaining the URL History of Pages and Content Items.
To generate a list of all items that are claiming more than one friendly URL, follow these steps:
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