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Workday Extend Custom Object Instances API

Operations for creating, reading, updating, and deleting custom object data instances attached to Workday business objects.

Workday Extend Custom Object Instances API is one of 16 APIs that Workday Extend publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Custom Object Instances. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, authentication docs, and an API reference.

This API exposes 5 operations across 2 paths, and defines 4 schemas. It is described by OpenAPI 3.2.0, at version v1.

Requests are made against a single base URL, https://{baseUrl}/api/customObjects/v1/{tenant}.

5 operations 2 paths 4 schemas 1 DELETE2 GET2 PUT

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
v1
Base URL
https://api.workday.com/extend/v1
Authentication
OAuth 2.0
Terms of Service
Resource Areas
1

Authentication & Security 1

Workday Extend Custom Object Instances API declares 1 security scheme for authenticating requests. It supports OAuth 2.0 (OAuth2) using the authorizationCode flow, exposing 2 scopes. By default, every request must be authenticated.

Paths & Operations 5

Across 2 paths, the API surfaces 5 operations — 1 DELETE, 2 GET, 2 PUT. Each is listed below with its method, path, parameters, and response codes.

Custom Object Instances 5

Operations for creating, reading, updating, and deleting custom object data instances attached to Workday business objects.

GET
/workers/{workerId}/customObjects/{customObjectName}
Workday Extend Retrieve custom object data for a worker
getWorkerCustomObject 2 params → 200401403404
PUT
/workers/{workerId}/customObjects/{customObjectName}
Workday Extend Create or update custom object data for a worker
updateWorkerCustomObject 2 params body → 200201400401403404
DELETE
/workers/{workerId}/customObjects/{customObjectName}
Workday Extend Delete custom object data for a worker
deleteWorkerCustomObject 2 params → 204401403404
GET
/organizations/{organizationId}/customObjects/{customObjectName}
Workday Extend Retrieve custom object data for an organization
getOrganizationCustomObject 2 params → 200401403404
PUT
/organizations/{organizationId}/customObjects/{customObjectName}
Workday Extend Create or update custom object data for an organization
updateOrganizationCustomObject 2 params body → 200201400401403404

Schemas 4

The contract defines 4 schemas that model the data the API accepts and returns. The most detailed are CustomObjectInstance (7 properties), ResourceReference (3 properties), ErrorResponse (2 properties). Each schema is shown below with its type and property counts.

CustomObjectData
object
Custom object field values as key-value pairs. Keys must match the field API names defined in the custom object definition. Values must conform to the field da…
CustomObjectInstance
object
7 properties
ResourceReference
object
3 properties
ErrorResponse
object
2 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

workday-extend-custom-object-instances-api-openapi.yml Raw ↑

Other APIs Workday Extend publishes across the network.

Workday Orchestrate Insights API
Workday Illuminate AI API
Workday Extend App Configurations API
Workday Extend App Deployments API
Workday Extend App Versions API
Workday Extend Apps API
Workday Extend Custom Object Definitions API
Workday Extend Custom Object Fields API
Workday Extend Graph Query API
Workday Extend Orchestration Executions API
Workday Extend Orchestration Steps API
Workday Extend Orchestration Triggers API
Where this information came from

This is an independent, third-party profile of Workday Extend Custom Object Instances API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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