By default, Power BI does not assign columns to any of the 13 available data categories. Assigning geographic categories, such as City, to columns helps Power BI determine how to display these values on map visualizations. For example, certain city names, such as Washington, are also associated with state or province names and without an assigned data category, map visuals would have to guess whether to plot the city or the state.
The Web URL Data Category can be used to enable the initiation of emails from Power BI report visuals. ...