# `PUT /carrier/order`

Protected. Requires a valid session cookie (`credentials: 'include'`).

Reorder carriers

Reorders carriers for the selected company.
`carrierIds` must include all existing carrier IDs exactly once.


## Body (JSON)

| Field | Required | Type | Description |
|-------|----------|------|-------------|
| `carrierIds` | yes | integer[] |  |

```json
{
  "carrierIds": [
    1
  ]
}
```

## Signals

On success, emits SSE signal: `carrier` (see [`GET /events`](../events.md)).

## Response `200`

Applied carrier order

```json
{
  "carrierIds": [
    1
  ]
}
```

## Errors

| Status | Description |
|--------|-------------|
| 400 | Invalid carrier order or no company selected — `{"error":"…"}` |
| 401 | Unauthorized — `{"error":"…"}` |
| 403 | Not authorized — `{"error":"…"}` |

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