Not set can be seen in a number of different reports and indicates that a particular piece of information is not available within the report. For example, in the Location report, not set indicates that Google Analytics was unable to determine someone’s exact geographic location when they accessed your website. While not set in the Source/Medium report occurs when a campaignThe top-level structure of your account, think of campaigns as folders within your account. You can create one or more campaigns inside your account based on your advertising objectives. There are multiple ways to structure your campaigns, for example, you can use campaigns for different targeting (search vs. display), for structuring keywords, allocating budget and more. Each campaign contains one or more ad groups to create a more granular structure inside your account. See also ad group.... Always-R Glossary tagged URLlocation of a resource on the Internet. hasn’t been fully constructed (for example, if ‘source’ isn’t defined it will be displayed as not set within the report).