Scenario 1: You have a UA property and have not set up a GA4 property. Scenario 2: You have created a GA4 property but haven’t linked it to a UA property. That will depend on how much of the GA4 setup assistant you have completed (more on that in a moment). Scenario 3: You have created a GA4 property and linked it to a UA property but haven’t completed all GA4 Setup Assistant steps. Using the GA4 Setup AssistantThe GA4 Setup Assistant is a 12-step tool that helps you track your GA4 migration progress.