Event Tiers can be be viewed and edited in the “Data Master” → “Catalog” page in the mParticle admin dashboard.
Note: Even though Catalog will list and allow you to search through all data points, only Events (all types) can be assigned an Event Tier. User information fields such as user/device identifiers or user attributes cannot be assigned an Event Tier. If you attempt to do so, you will receive the following error message: “You can't modify Event Tiers for User Information.”
From the Catalog page, under the Event Tier column, you can download the Event Volume Report by clicking “Download Report”. This will generate a report summarizing events ingested in the selected timeframe and provides visibility into the Calculated Attributes and Audiences created using those events. Use this report to understand which events to tier to any tier other than Personalize. Setting high volume events that aren't being used for calculations to a non-Personalize tier provides cost optimizations and performance improvements.