Is First Event per Device/User ID - Airbridge Help Center

Airbridge identifies first events (e.g. first installation, first purchase) using the below logic. Two types of IDs are used.

Is First Event per Device ID

DeviceID is provided and used for mobile app events only.

Device ID	Event Category	Event Time	Is First Event per Device ID
deviceID1	Install (App)	2020-06-24 17:00:00	true
deviceID1	Install (App)	2020-06-25 18:00:00	false

UserID is provided and used for both web and app events. The event category of the first event is applied to the Web + App platform.

User ID	Event Category	Event Time	Is First Event per User ID
userID1	Order Complete (App)	2020-06-22 21:36:00	true
userID1	Order Complete (Web)	2020-06-23 09:00:00	false

If “Is First Event Per Device” is null: DeviceID is empty or not the right format.
If “Is First Event Per User” is null: UserID is empty or not the right format.