According to Google:
Google Analytics 4 is our next-generation measurement solution, and it’s replacing Universal Analytics. On July 1, 2023, standard Universal Analytics properties will stop processing data. We strongly encourage you to make the switch to Google Analytics 4 as soon as possible.
Understand what’s going to happen
Beginning in March 2023, if you haven’t already created a GA4 property, we’ll create one for you, unless you opt out.
This new property will be based on the settings in your Universal Analytics property. If you have created a GA4 property, and that property is connected to a Universal Analytics property, we’ll copy over any configurations (e.g., goals, audiences, etc.) from your Universal Analytics property that you have not marked as complete in your GA4 property, unless you opt out. Learn more
Until July 1, 2023, you can continue to use and collect new data in your Universal Analytics properties.
After July 1, 2023, you’ll be able to access your previously processed data in your Universal Analytics property for at least six months. We know your data is important to you, and we strongly encourage you to export your historical reports during this time.
In the coming months, we’ll provide a future date for when existing Universal Analytics properties will no longer be available. After this future date, you’ll no longer be able to see your Universal Analytics reports in the Analytics interface or access your Universal Analytics data via the API.
360 Universal Analytics properties will receive a one-time processing extension ending on July 1, 2024.
Check if your Google Analytics property is impacted
If you created your property before October 14, 2020, you’re likely using a Universal Analytics property.
If you created your property after October 14, 2020, you’re likely using a Google Analytics 4 property already, and no action is required.
Still not sure? Confirm which type of property you’re using
Complete your next steps
We strongly encourage you to make the switch to Google Analytics 4 as soon as possible. Doing so will allow you to build the necessary historical data and usage in the new experience, preparing you for continuity once Universal Analytics is no longer available.
Original Source – https://support.google.com/analytics/answer/11583528?hl=en