> Documentation index for AI agents: https://docs.pagerduty.com/llms.txt

# List Impactors affecting Business Services

`GET https://api.pagerduty.com/business_services/impactors`

Retrieve a list of Impactors for the top-level Business Services on the account. Impactors are currently limited to Incidents.

This endpoint does not return an exhaustive list of Impactors but rather provides access to the highest priority Impactors for the Business Services in question up to the limit of 200.

To get Impactors for a specific set of Business Services, use the `ids[]` parameter.

The returned Impactors are sorted first by priority and secondarily by their creation date.
Scoped OAuth requires: `services.read`

## Authorization

- **api_key** (apiKey) — `Authorization` header. The API Key with format `Token token=<API_KEY>`

## Query parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `ids[]` | string |  | The IDs of the resources. |

## Header parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `Accept` | string | yes | The `Accept` header is used as a versioning header. Default: `application/vnd.pagerduty+json;version=2`. |

## Response 200

OK

### `application/json`

| Field | Type | Required | Description |
|---|---|---|---|
| `limit` | integer |  | Echoes limit pagination property. Read-only. |
| `more` | boolean |  | Indicates if there are additional records to return. Read-only. |
| `impactors` | array of object |  |  |
| `impactors[].id` | string |  | Read-only. |
| `impactors[].type` | string |  | The kind of object that is impacting. One of: `incident`. |

Example: Response Example

```json
{
  "limit": 100,
  "more": false,
  "impactors": [
    {
      "id": "PD1234",
      "type": "incident"
    },
    {
      "id": "PF9KMXH",
      "type": "incident"
    }
  ]
}
```

## Response 400

Caller provided invalid arguments. Please review the response for error details. Retrying with the same arguments will *not* work.

### `application/json`

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | object |  |  |
| `error.code` | integer |  | Read-only. |
| `error.message` | string |  | Error message string. Read-only. |
| `error.errors` | array of string |  | Read-only. |

## Response 401

Caller did not supply credentials or did not provide the correct credentials.
If you are using an API key, it may be invalid or your Authorization header may be malformed.

### `application/json`

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | object |  |  |
| `error.code` | integer |  | Read-only. |
| `error.message` | string |  | Error message string. Read-only. |
| `error.errors` | array of string |  | Read-only. |

## Response 403

Caller is not authorized to view the requested resource.
While your authentication is valid, the authenticated user or token does not have permission to perform this action.

### `application/json`

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | object |  |  |
| `error.code` | integer |  | Read-only. |
| `error.message` | string |  | Error message string. Read-only. |
| `error.errors` | array of string |  | Read-only. |

## Response 422

Unprocessable Entity. Some arguments failed validation checks.

### `application/json`

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | object |  |  |
| `error.code` | integer |  | Read-only. |
| `error.message` | string |  | Error message string. Read-only. |
| `error.errors` | array of string |  | Read-only. |

## Response 429

Too many requests have been made, the rate limit has been reached.

### `application/json`

| Field | Type | Required | Description |
|---|---|---|---|
| `error` | object |  |  |
| `error.code` | integer |  | Read-only. |
| `error.message` | string |  | Error message string. Read-only. |
| `error.errors` | array of string |  | Read-only. |

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