The pageName variable is used to identify each page that is tracked on the website.
If the pageName variable is not populated with a defined value (such as Home), Analytics uses the URL of the page. Because the page name is central to your reports, make sure that all parties in your organization agree on a strategy before you implement.
Depending on the content management system your site uses, it is helpful to add content elements to your system that can be used to populate Analytics variables. Many companies find that most Analytics variables can be populated from existing content management elements.