RelativityOne · Controlled Vocabulary

RelativityOne Vocabulary

Key terms and concepts used in the RelativityOne eDiscovery platform and its APIs.

16 Terms Updated 2026-05-02

RelativityOne Vocabulary is a controlled vocabulary published by RelativityOne on the APIs.io network, defining 16 terms.

Defined terms include eDiscovery, Legal Hold, Custodian, Preservation, and Artifact ID.

A controlled vocabulary pins the words an API’s schemas, parameters and documentation use to one agreed definition each — the shared language a human or an agent needs to read the API the same way its authors do.

Terms

eDiscovery

Electronic discovery; the process of identifying, collecting, reviewing, and producing electronically stored information (ESI) in response to litigation, investigation, or regulatory requests.

Legal Hold

A directive requiring an organization to preserve all relevant data and documents related to anticipated or pending litigation or investigation.

Custodian

An individual whose electronic data (email, files, messages) is subject to a legal hold or preservation obligation in connection with a legal matter.

Preservation

The process of ensuring that electronically stored information is not altered, overwritten, or deleted while subject to a legal hold.

Artifact ID

RelativityOne's internal integer identifier uniquely assigned to each object (document, custodian, project, workspace) within the platform.

Workspace

The primary organizational unit in RelativityOne, acting as a container for documents, processing, review, and analytic operations for a specific matter.

Relativity Dynamic Object (RDO)

Custom objects created in RelativityOne to represent data structures beyond standard document and folder types, supporting flexible data modeling.

Kepler Framework

RelativityOne's REST API hosting framework that allows developers to create custom REST API endpoints by implementing .NET interfaces.

Object Manager

The RelativityOne API service for CRUD operations on documents and Relativity Dynamic Objects, supporting bulk read, create, update, and delete operations.

Matter Management

The process of organizing and tracking legal cases, projects, and associated data, personnel, and deadlines.

Active Custodian

A custodian who is currently under a legal hold obligation and whose data is actively being preserved.

Data Source

A system containing custodian data subject to preservation, such as Microsoft 365 (Exchange, SharePoint, OneDrive) or Google Workspace (Gmail, Drive).

Communication

A legal hold notice, reminder, escalation, or release notification sent to custodians to inform them of their preservation obligations.

Processing

The ingestion and preparation of ESI for review in RelativityOne, including text extraction, deduplication, and metadata extraction.

Review

The attorney review workflow in RelativityOne for coding documents as relevant, privileged, or non-responsive to production requests.

Privilege Log

A log documenting documents withheld from production due to attorney-client privilege or work product protection.

Controlled Vocabulary

title: RelativityOne Vocabulary
description: Key terms and concepts used in the RelativityOne eDiscovery platform and its APIs.
version: 1.0.0
modified: '2026-05-02'
terms:
  - term: eDiscovery
    definition: >-
      Electronic discovery; the process of identifying, collecting, reviewing, and
      producing electronically stored information (ESI) in response to litigation,
      investigation, or regulatory requests.

  - term: Legal Hold
    definition: >-
      A directive requiring an organization to preserve all relevant data and documents
      related to anticipated or pending litigation or investigation.

  - term: Custodian
    definition: >-
      An individual whose electronic data (email, files, messages) is subject to a
      legal hold or preservation obligation in connection with a legal matter.

  - term: Preservation
    definition: >-
      The process of ensuring that electronically stored information is not altered,
      overwritten, or deleted while subject to a legal hold.

  - term: Artifact ID
    definition: >-
      RelativityOne's internal integer identifier uniquely assigned to each object
      (document, custodian, project, workspace) within the platform.

  - term: Workspace
    definition: >-
      The primary organizational unit in RelativityOne, acting as a container for
      documents, processing, review, and analytic operations for a specific matter.

  - term: Relativity Dynamic Object (RDO)
    definition: >-
      Custom objects created in RelativityOne to represent data structures beyond
      standard document and folder types, supporting flexible data modeling.

  - term: Kepler Framework
    definition: >-
      RelativityOne's REST API hosting framework that allows developers to create
      custom REST API endpoints by implementing .NET interfaces.

  - term: Object Manager
    definition: >-
      The RelativityOne API service for CRUD operations on documents and Relativity
      Dynamic Objects, supporting bulk read, create, update, and delete operations.

  - term: Matter Management
    definition: >-
      The process of organizing and tracking legal cases, projects, and associated
      data, personnel, and deadlines.

  - term: Active Custodian
    definition: >-
      A custodian who is currently under a legal hold obligation and whose data is
      actively being preserved.

  - term: Data Source
    definition: >-
      A system containing custodian data subject to preservation, such as Microsoft
      365 (Exchange, SharePoint, OneDrive) or Google Workspace (Gmail, Drive).

  - term: Communication
    definition: >-
      A legal hold notice, reminder, escalation, or release notification sent to
      custodians to inform them of their preservation obligations.

  - term: Processing
    definition: >-
      The ingestion and preparation of ESI for review in RelativityOne, including
      text extraction, deduplication, and metadata extraction.

  - term: Review
    definition: >-
      The attorney review workflow in RelativityOne for coding documents as relevant,
      privileged, or non-responsive to production requests.

  - term: Privilege Log
    definition: >-
      A log documenting documents withheld from production due to attorney-client
      privilege or work product protection.