# `PUT /brand`

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

Upsert brand

Insert or update brand by `name` for the selected company. `gsprpinfo` optional.


## Body (JSON)

```json
{
  "name": "Acme",
  "gsprpinfo": "Acme GmbH"
}
```

## Response `200`

Upserted brand

```json
{
  "brand": {
    "id": 1,
    "name": "…",
    "gsprpinfo": "…"
  }
}
```

## Errors

| Status | Description |
|--------|-------------|
| 400 | Invalid brand or no company selected — `{"error":"…"}` |
| 401 | Unauthorized — `{"error":"…"}` |
| 403 | Not authorized — `{"error":"…"}` |
| 404 | Company not found — `{"error":"…"}` |

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