## cURL

```
curl \
  -X PATCH 'MEILISEARCH_URL/indexes/movies' \
  -H 'Content-Type: application/json' \
  --data-binary '{ "primaryKey": "id" }'
```

### HTTP Responses

**202**

**401**

**404**

```
{
  "taskUid": 0,
  "indexUid": "movies",
  "status": "enqueued",
  "type": "indexUpdate",
  "enqueuedAt": "2021-01-01T09:39:00.000000Z"
}
```

### PATCH Request Structure

```
/
indexes
/
{index_uid}
```

## Authorizations

**Authorization**

- **Type**: string (header)
- **Required**: Yes

An API key is a token that you provide when making API calls. Read more about [how to secure your project](/content/docs/learn/security/basic_security/index.html).

Include the API key to the `Authorization` header, for instance:

```
-H 'Authorization: Bearer 6436fc5237b0d6e0d64253fbaac21d135012ecf1'
```

If you use a SDK, ensure you instantiate the client with the API key, for instance with [JS SDK](https://github.com/meilisearch/meilisearch-js):

```
const client = new Meilisearch({
  host: 'MEILISEARCH_URL',
  apiKey: '6436fc5237b0d6e0d64253fbaac21d135012ecf1'
});
```

## Path Parameters

- **index_uid**: string (required) - Unique identifier of the index.

## Body

**application/json**

### Request body for updating an existing index

- **primaryKey**: string | null - New [primary key](/content/docs/learn/getting_started/primary_key/index.html) of the index
- **uid**: string | null - New uid for the index (for renaming)

## Response

**202**

**application/json**

A summarized view of a task, returned when a task is enqueued.

### Task Summary

- **taskUid**: integer<u-int32> (required) - Unique sequential identifier of the task.
- **status**: enum<string> (required) - Status of the task. Possible values are `enqueued`, `processing`, `succeeded`, `failed`, and `canceled`.
- **type**: enum<string> (required) - Type of operation performed by the task. Available options include `documentAdditionOrUpdate`, `documentEdition`, `documentDeletion`, `settingsUpdate`, `indexCreation`, `indexDeletion`, `indexUpdate`, etc.
- **enqueuedAt**: string<date-time> (required) - Date and time when the task was enqueued.
- **indexUid**: string | null - Unique identifier of the targeted index. Null for global tasks.
- **customMetadata**: string | null - Custom metadata attached to this task at creation.