A query input parameter that specifies extra custom fields to log in query audit and activity logs. Fields from extraLogFields appear in the logs with the customKey prefix. For example, setting extraLogFields: {alertId: "123", alertName: "MyAlert"} creates log entries customKey.alertId=123 and customKey.alertName=MyAlert. This parameter enables tracking and correlating queries with custom identifiers like alert IDs, trace IDs, or application-specific metadata.