---
schema_version: "1"
id: cd76d4c9b0884bd4ff89e1b3dcb2f4d7eb628e575353ba70868b3217d82b2d3e
title: ExpertSubject
collection: legacydeveloper
version: current
locale: en-us
portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/life_sciences_dev_guide/sforce_api_objects_expertsubject.md
canonical_url: https://developer.salesforce.com/docs/atlas.en-us.life_sciences_dev_guide.meta/life_sciences_dev_guide/sforce_api_objects_expertsubject.htm
source_site: developer.salesforce.com
content_type: documentation
content_hash: b9b96183579e8b2532aa00e1687e2be5d8f822799dbf3c2636f16682c7da6970
description: Represents a junction between an expert and the subject that the expert is certified to speak or present about in managed events. This object is available in API version 67.0 and later.
---
# ExpertSubject

Represents a junction between an expert and the subject that the expert is certified to speak or present about in managed events. This object is available in API version 67.0 and later.

## Supported Calls

create(), delete(), describeLayout(), describeSObjects(), getDeleted(), getUpdated(), query(), retrieve(), undelete(), update(), upsert()

## Fields

### EffectiveDateTime

- **Type**: dateTime
- **Properties**: Create, Filter, Sort, Update
- **Description**: Required. Specifies the date and time from when the expert is qualified as a subject expert.

### ExpertId

- **Type**: reference
- **Properties**: Create, Filter, Group, Sort
- **Description**: The ID of the expert.
    
    This field is a relationship field.
- **Relationship Name**: Expert
- **Relationship Type**: Master-detail
- **Refers To**: Expert (the master object)

### ExpirationDateTime

- **Type**: dateTime
- **Properties**: Create, Filter, Nillable, Sort, Update
- **Description**: Specifies the date and time until when the expert is qualified as a subject expert.

### LastReferencedDate

- **Type**: dateTime
- **Properties**: Filter, Nillable, Sort
- **Description**: The timestamp when the current user last accessed this record indirectly, for example, through a list view or related record.

### LastViewedDate

- **Type**: dateTime
- **Properties**: Filter, Nillable, Sort
- **Description**: The timestamp when the current user last viewed this record or list view.
    
    If this value is null, and LastReferenceDate isn’t null, the user accessed this record or list view indirectly.

### Name

- **Type**: string
- **Properties**: Create, Filter, Group, idLookup, Sort, Update
- **Description**: The name of the expert subject.

### QualificationEventPtpcId

- **Type**: reference
- **Properties**: Create, Filter, Group, Nillable, Sort, Update
- **Description**: The managed event participant that associates the expert with the managed event they participated in to qualify as an expert on the subject.
    
    This field is a relationship field.
- **Relationship Name**: QualificationEventPtpc
- **Refers To**: MngEventParticipant

### Status

- **Type**: picklist
- **Properties**: Create, Filter, Group, Nillable, Sort, Update
- **Description**: Specifies the current status of the subject expert.

### SubjectId

- **Type**: reference
- **Properties**: Create, Filter, Group, Sort, Update
- **Description**: Required. The ID of the subject that the expert has expertise on.
    
    This field is a relationship field.
- **Relationship Name**: Subject
- **Refers To**: Subject

### SourceSystem

- **Type**: string
- **Properties**: Create, Filter, Group, Nillable, Sort, Update
- **Description**: The name of the external system that generated the record.

### SourceSystemIdentifier

- **Type**: string
- **Properties**: Create, Filter, Group, idLookup, Nillable, Sort, Update
- **Description**: The ID of the record in the external system.

## Associated Objects

This object has the following associated objects. If the API version isn’t specified, they’re available in the same API versions as this object. Otherwise, they’re available in the specified API version and later.

ExpertSubjectFeed

Feed tracking is available for the object.

ExpertSubjectHistory

History is available for tracked fields of the object.