> ## Documentation Index
> Fetch the complete documentation index at: https://orderly.network/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Error Response

> Format and example of WebSocket error responses, including the client ID mapping pattern.

Error responses follow the same format as successful responses, with `success` set to `false` and an `errorMsg` field explaining the issue. You can use the `id` field to map the error response with the corresponding request.

```json theme={null}
{
  "id": "clientID7",
  "event": "subscribe",
  "success": false,
  "ts": 1614141150601,
  "errorMsg": "invalid symbol PERP_BTC_USDC"
}
```

## Common error messages

| Error message                        | Description                                      |
| ------------------------------------ | ------------------------------------------------ |
| `invalid symbol <symbol>`            | The requested symbol does not exist              |
| `invalid topic <topic>`              | The requested topic is not supported             |
| `auth failed`                        | Authentication failed due to invalid credentials |
| `missing required parameter <param>` | A required parameter is missing                  |