Keep in mind that GA4 will not log events and event parameters that exceed Google Analytics limits.
Are you still using a Universal Property?
If you are still using the Universal Analytics property, either through Google Analytics or Google Analytics 360, and haven’t updated to GA4, then you can find the Universal Analytics limits and quotas here.
(We recommend creating a GA4 property alongside your existing Universal property to gain access to some of the new features available in GA4).
What are your Collection Limits?
|Logged Item||GA4 Limit||Can the item be deleted if you’re close to the limit?|
|Distinctly named events||500 per app instance
(Automatically collected events and events collected via enhanced measurements do not count)
|Length of the event name||40 characters||N/A|
|Length of event-parameter name||40 characters||N/A|
|Length of event-parameter value||100 characters||N/A|
|User properties||25 per property||No|
|Length of user-property names||24 characters||N/A|
|Length of user-property values||36 characters||N/A|
What are your Google Analytics 4 Limits?
GA4 lets you track an almost infinite number of parameters with events but you will not be able to access all of them from the interface. You will need to pick your top 50 text parameters to map as custom dimensions in the reporting UI.
|Configured Item||GA4 Limit||Can the item be deleted if you’re close to the limit?|
|Registered user properties||25||Yes|
|Registered text parameters||50||Yes|
|Registered numeric parameters||50||Yes|
|Registered custom conversion events||30||Yes|
|Data retention||Up to 14 months||N/A|
|Analyses||200 created per user
|Analysis of sampling limits||10M events per query||N/A|