# MockErrors Undici exposes a variety of mock error objects that you can use to enhance your mock error handling. You can find all the mock error objects inside the `mockErrors` key. ```js import { mockErrors } from 'undici' ``` | Mock Error | Mock Error Codes | Description | | --------------------- | ------------------------------- | ---------------------------------------------------------- | | `MockNotMatchedError` | `UND_MOCK_ERR_MOCK_NOT_MATCHED` | The request does not match any registered mock dispatches. |