I am trying to work out whether there are any limits on the number of unique event_params.value.string_value's for a particular event_params.key in GA4? In this case I have a custom event called dispatch with a custom event_params.key called action. event_params.value.string_value has values like BUILDING_USE, MOVE_MOBILE_UNIT etc. I am seeking to find out whether there are any limits as to how many different values this can take? Can we send through an unlimited variety of different string_values here or is there a limit on this?
Here is a screenshot of what it looks like in BigQuery:
This is how it looks in Google Analytics itself:
