Update time: Dec 25, 2024
You may see different structures of Effective User ID in GA4 User Explorer, as shown below:
The display logic of Effective User ID is:
- If User ID is deployed, User ID is displayed
- Otherwise, Device ID is displayed
- For APP：Device ID is Instance ID
- For Website：Device ID is Client ID
- For Client-Side Tracking, the Client ID is a random number plus a timestamp, eg: 1197596843.1673515099
- For Server-Side Tracking, the Client ID is two strings of characters plus a timestamp, eg: F99Fd7gVuQuP93MZdJiEn07o/eZba6j9bAt8ETLsn8E=.1733280703
The Effective User ID corresponds to the user_pseudo_id field in BigQuery.
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