# `PATCH /customergroup/{id}`

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

Update customer group

Renames a customer group. Implicit `POS` / `Lieferanten` cannot be
renamed (`Name cannot be changed`). Reorder via `PUT /customergroup/order`.


## Path parameters

| Param | Required | Type | Description |
|-------|----------|------|-------------|
| `id` | yes | integer |  |

## Body (JSON)

| Field | Required | Type | Description |
|-------|----------|------|-------------|
| `name` | yes | string |  |

```json
{
  "name": "Stammkunden"
}
```

## Response `200`

Updated customer group

```json
{
  "customergroup": {
    "id": 1,
    "name": "…",
    "sort": 1
  }
}
```

## Errors

| Status | Description |
|--------|-------------|
| 400 | Name required, name cannot be changed, invalid id, or no company selected — `{"error":"…"}` |
| 401 | Unauthorized — `{"error":"…"}` |
| 403 | Not authorized — `{"error":"…"}` |
| 404 | Customer group or company not found — `{"error":"…"}` |

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_Generated from `@openapi` JSDoc. Do not edit by hand — run `npm run docs:api`._