# Fetches all external references on a user's account

Returns external references, for objects of particular types, that are synced with the
third-party systems.
This endpoint returns structured External Reference objects.
As with all Kantata OX API endpoints, the returned data will be referenced in sorted order in the `results` array
and will be indexed by ID in the `external_references` top-level JSON key.
Please see our [Response Format](#section/Response-Format) section for more information.

Endpoint: GET /external_references
Version: 1.0.0

## Query parameters:

  - `subject_type` (string, required)
    The type of the Kantata OX object that has the external reference. One of
`Assignment`, `BillingMilestone`, `CustomField`, `CustomFieldChoice`, `CustomFieldSet`, `CustomFieldValue`, `Estimate`, `EstimateScenario`, `EstimateScenarioResource`, `Expense`, `ExpenseBudget`, `Invoice`, `Participation`, `Post`, `RateCard`, `Role`, `Skill`, `StatusReport`, `Story`, `StoryAllocationDay`, `Submission`, `SurveyAnswer`, `SurveyQuestion`, `SurveyResponse`, `SurveyTemplate`, `TimeEntry`, `TimeOffEntry`, `User`, `Vendor`, `Workspace`, `WorkspaceAllocation`, `WorkspaceGroup`, or `WorkspaceResource`.

  - `created_after` (string)
    Filter for records created after a specified datetime. The datetime must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.

  - `created_before` (string)
    Filter for records created before a specified datetime. The datetime must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.

  - `external_message` (string)
    Only include external references with the specified external message.

  - `external_status` (string)
    The status of the external object in the external system.

  - `include` (string)
    Any of the below associations can be included in your request by providing the `include` param, e.g. `include=association1,association2`.
- `subject` (polymorphic) - The item with which the external reference is associated.

  - `last_synced_after` (string)
    Filter for records last synced after a specified datetime. The datetime must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.

  - `last_synced_before` (string)
    Filter for records last synced before a specified datetime. The datetime must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.

  - `only` (string)
    Allows you to request one or more resources directly by ID. Multiple IDs can be supplied
in a comma separated list, like `GET /api/v1/workspaces.json?only=5,6,7`.

  - `order` (string)
    Supply `order` with the name of a valid sort field for the endpoint and a direction.

Valid values: `created_at:asc`, `created_at:desc`, `last_synced_at:asc`, and `last_synced_at:desc`.

  - `page` (integer)

  - `per_page` (integer)

  - `service_model` (string)
    The type of the external object.

  - `service_model_ref` (string)
    The object ID of an external object.

  - `service_name` (string)
    The provider name of the integration.

  - `status` (string)
    The status of the integration. Options are 'pending', 'successful', or 'failed'.

  - `subject_id` (integer)
    The ID of the Kantata OX object that has the external reference.

  - `updated_after` (string)
    Filter for records updated after a specified datetime. The datetime must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.

  - `updated_before` (string)
    Filter for records updated before a specified datetime. The datetime must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.

## Response 200 fields (application/json):

  - `count` (integer)

  - `meta` (object)

  - `meta.count` (integer)

  - `meta.page_count` (integer)

  - `meta.page_number` (integer)

  - `meta.page_size` (integer)

  - `results` (array)

  - `results.key` (string)

  - `results.id` (string)

## Response 400 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)

## Response 401 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)

## Response 403 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)

## Response 404 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)

## Response 422 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)

## Response 503 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)