Unexplained userAssignment events in Analytics data.

Issue:

• There are some users in my Analytics data that only have userAssignment events, they have no other analytics events.

Environment:

userAssignment Analytics events can be viewed in the Analytics Event Browser, Data Explorer, and SQL Data Explorer tools. They can be viewed in their raw form or used in analysis and reporting. 

An example from the Event Browser tool

{
  "clientVersion": "0.1.0",
  "collectInsertedTimestamp": "2025-03-06 14:31:53.886",
  "eventDate": "2025-03-06 00:00:00.000",
  "eventID": 3364084789924635822,
  "eventLevel": 0,
  "eventName": "userAssignment",
  "eventTimestamp": "2025-03-06 14:31:53.886",
  "eventUUID": "4fa19240-43d7-4699-b72b-ce19769f8ba3",
  "eventVersion": 1,
  "gaUserAcquisitionChannel": "None",
  "gaUserAgeGroup": "UNKNOWN",
  "gaUserCountry": "ZZ",
  "gaUserGender": "UNKNOWN",
  "gaUserStartDate": "2025-03-06 00:00:00.000",
  "mainEventID": 3364084789924635822,
  "msSinceLastEvent": null,
  "platform": "UNKNOWN",
  "projectID": "4dc93a42-ba61-4e59-bfa0-3b1113a87572",
  "rcAssignmentID": "d562f202-2b9b-4cce-8adf-39c674f98462",
  "rcCampaignID": "3dd23bd0-9d3b-4057-8a77-06e3f60490ab",
  "rcEnvironmentID": "c9010a75-6523-4f04-846b-f8bdf979aab8",
  "rcRuleID": "3dd23bd0-9d3b-4057-8a77-06e3f60490ab",
  "rcVariantID": "1afd05c6-8c98-4531-8586-ceaa6fbaba91:Variant 1",
  "sdkMethod": "UserAssignmentEvent",
  "unityInstallationID": "ffa2db74b39ac4538a0bc52702d46dd0",
  "userID": "ffa2db74b39ac4538a0bc52702d46dd0"
}

Cause:

userAssignement events are recorded automatically by the Game Overrides backend when a player is selected and served a configuration that differs from the default. These events are used to count the players that are served that override and ensure that the system is working as expected.

These events are not sent from the Analytics SDK on the game client and, therefore, don't rely on the Analytics SDK or its consent. They don't have any additional analytics context and do not contribute to the player Analytics metrics used by the standard Analytics dashboard reports. This is why userAssignment events can be observed in the raw Analytics data and any custom SQL reports, but don't contribute to the standard dashboards. 

Resolution:

If you have further questions relating to your Game Overrides or Analytics implementation, please reach out to the Analytics and LiveOps.