# Update Label configuration by ID

**`PUT /api/v1/policy-labels/{definitionId}`**

Updates the policy label definition configuration for the specified label ID.

**Authentication:** Bearer token required (`Authorization: Bearer <token>`)

**Permission:** `Permissions.STATISTICS_LABEL_CREATE`

***

## Request

### Path Parameters

| Parameter      | Type   | Required | Description                        |
| -------------- | ------ | -------- | ---------------------------------- |
| `definitionId` | string | Yes      | Policy label definition identifier |

### Request Body

```json
{
  "name": "Updated Carbon Credit Label",
  "description": "Updated certification label for verified carbon credits",
  "policyId": "63e3e5e8a01b3c001234abcd",
  "config": {}
}
```

| Field         | Type   | Required | Description                                  |
| ------------- | ------ | -------- | -------------------------------------------- |
| `name`        | string | Yes      | Human-readable name for the label definition |
| `description` | string | No       | Description of what this label certifies     |
| `policyId`    | string | Yes      | ID of the policy this label applies to       |
| `config`      | object | Yes      | Updated label configuration object           |

***

## Response

### Success Response

**Status:** `200 OK`

```json
{
  "id": "63e3e5e8a01b3c001234abcd",
  "name": "Updated Carbon Credit Label",
  "description": "Updated certification label for verified carbon credits",
  "policyId": "63e3e5e8a01b3c001234abcd",
  "status": "DRAFT",
  "config": {},
  "owner": "did:hedera:testnet:zHcDLGFNymFAJiMBKnpbHDgjvTn6yZnwkPPeFhtJBECH_0.0.4532001"
}
```

### Error Responses

| Status                      | Description                                           |
| --------------------------- | ----------------------------------------------------- |
| `400 Bad Request`           | Malformed request body                                |
| `401 Unauthorized`          | Missing or invalid token                              |
| `403 Forbidden`             | Insufficient permissions                              |
| `404 Not Found`             | Label definition with the specified ID does not exist |
| `422 Unprocessable Entity`  | `definitionId` is missing or invalid                  |
| `500 Internal Server Error` | Unexpected server failure                             |


---

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