---
title: "Get a list of options for a dimension"
method: GET
path: "/instances/{instance_id}/dimensions/{dimension}/options"
tags: ["Private"]
---

# Get a list of options for a dimension

`GET /instances/{instance_id}/dimensions/{dimension}/options`

## Request

- Base URL: `https://api.beta.ons.gov.uk/v1`
- URL: `https://api.beta.ons.gov.uk/v1/instances/{instance_id}/dimensions/{dimension}/options`
- Auth: API key in header `Authorization`

Get all unique options from a dimension

## Path parameters

- `instance_id` string, required
- `dimension` string, required

## Headers

- `If-Match` string

## Response `200`

Return a list of unique options

- object
  - `dimension` string: The name of the dimension
  - `options` string[]: A list of all unique options within a dimension

## Other responses

- `400`: Failed to process the request due to invalid request
- `401`: The token provided is unauthorised to carry out this operation
- `403`: The request is forbidden
- `404`: dimension does not match any dimensions within the instance
- `409`: Failed to process the request due to a conflict
- `500`: Failed to process the request due to an internal error

---

[API](https://skmtc.dev/office-of-national-statistics/apis/dataset-api.md) - [All operations](https://skmtc.dev/office-of-national-statistics/apis/dataset-api/llms.txt) - [OpenAPI document](https://skmtc.dev/office-of-national-statistics/apis/dataset-api/revisions/a2947a13d675?raw)