# `POST /category/{id}/move`

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

Move category to a new parent

Moves a category to a new parent. Both source and target must be in
the same authorized company. Moving into itself or into a descendant
(cycle) fails with `Invalid parent`. The moved category gets the next
sibling `sort` under the new parent.


## Path parameters

| Param | Required | Type | Description |
|-------|----------|------|-------------|
| `id` | yes | integer | Category id to move |

## Body (JSON)

```json
{
  "parentId": 3
}
```

## Response `200`

Moved category

```json
{
  "category": { … }
}
```

## Errors

| Status | Description |
|--------|-------------|
| 400 | Invalid parent — `{"error":"…"}` |
| 401 | Unauthorized — `{"error":"…"}` |
| 403 | Not authorized — `{"error":"…"}` |
| 404 | Category not found — `{"error":"…"}` |

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