UnifiedTaskParticipant

Represents a participant in a task. Available for reports and dashboards in API version 59.0 and later.

Starting in Summer ’25, this object isn’t available unless Activity 360 Reporting was enabled in your org in Spring ’25 or earlier. See Knowledge Article: Einstein Activity Capture Activity 360 Reporting, Activity Metrics, Activities Dashboard Upcoming Retirement

Supported Calls

describeSObjects(), query(), retrieve()

This object is available only for reporting. It isn’t supported for SOQL queries and APIs.

Einstein Activity Capture and Activity 360 Reporting must be enabled.

Field	Details
ActivityId	Type reference Properties Filter, Group, Nillable, Sort Description ID of the activity the person is participating in. This field is a relationship field. Relationship Name Activity Relationship Type Lookup Refers To UnifiedTask
ChannelAddress	Type string Properties Filter, Nillable Description Username of the participant. The username is captured at the time of the communication; it doesn’t change if the contact’s username is updated later.
ParticipantType	Type picklist Properties Filter, Nillable, Restricted picklist Description The participant’s role in the activity. Possible values are: `AssignedTo` `Attendee` `BCC` `CC` `From` `OptionalAttendee` `Organizer` `To`
PersonId	Type reference Properties Filter, Group, Nillable, Sort Description ID of the contact, lead, or user participating in the activity. This field is a polymorphic relationship field. Relationship Name Person Relationship Type Lookup Refers To Contact, Lead, User