Tiered Events

mParticle collects data from all your platforms and data connections and connects it to all of your team’s tools and systems. All collected data is stored in mParticle, in case you need to run data replays (re-ingesting data with help from mParticle Support). Additionally, mParticle makes all data available for evaluation in Audiences and Calculated Attributes. However, many events and the data related to them may not be needed for these evaluations depending on how you use Audiences or Calculated Attributes. With Tiered Events, you can choose to store data but not evaluate it, which may improve performance.

List of custom events showing tiered events

mParticle provides two event tiers:

  • Store and Evaluate: This is the default for all events and related data collected as part of an mParticle ingestion. Events are ingested, available for evaluation in audiences and calculated attributes, stored, and forwarded.
  • Store Only: Events marked as Store Only are ingested, stored, and forwarded but are not used in real-time evaluations for audiences or calculated attributes. The data is still available for replaying to third party tools, and for backfills of calculated attributes and standard audience creation.


To mark an event to be Store Only, plan and implement the changes:

  1. In Data Master > Catalog, click Download Report to download a CSV file that lists all the events used in calculated attributes and audiences for the time range you specify. Sample report

    The report shows you how many of each event type have been received from input for the data range you selected. You can use this number to, for example, identify events that you may want to mark as Store Only and which will be easy to remove from the calculated attribute or audience definition so that you can change to Store Only.

  2. Identify the events you don’t plan to use for evaulation in audiencs or calculated attributes. These are the events you’ll mark as Store Only.
  3. Using the mParticle UI (Data Master > Catalog), set the events you don’t need to evaluate in audiences or calculated attributes to Store Only.

After you check all the issues in the following section, use Set Event to Store Only to change event tiers.

Before you change a tier from the default Store & Evaluate

Before you change the default tier, be aware of the consequences:

  • Data stored while the event is marked as Store Only is never available for real-time evaluation, only for data replay or backfills.
  • Only events, including custom events, screen views, commerce events, and application lifecycle events, can be assigned an event tier. User information can’t be assigned a tier and so is only in the Store and Evaluate tier.

Set Event to Store Only

You must have the Admin and Compliance role to change event tiers.

To set an event and its related attributes to Store Only:

  1. Navigate to Data Master > Catalog and select the event type such as Custom Events or Screen View.
  2. Next to the event, click the Event Tier drop-down and select Store Only.
  3. Click Apply.

One event showing tiered events dialog

Notice that once an event is set to Store Only, it is grayed out in the Event Tier drop-down.

Changing tiers

If the event is used in an audience or calculated attribute, you can’t change it from Store & Evaluate, and you’ll see the attribute grayed out in the Event Tier drop-down.

To make a change:

  1. Remove the event from the audience or calculated attribute definition.
  2. Set the event to Store Only.

Was this page helpful?