> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter-d02e98a0-mintlify-7021d5f4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# BadRequestResponseError - Python SDK

> BadRequestResponseError method reference

<Warning>
  The Python SDK and docs are currently in beta.
  Report issues on [GitHub](https://github.com/OpenRouterTeam/python-sdk/issues).
</Warning>

Bad Request - Invalid request parameters or malformed input

## Fields

| Field     | Type                                                                                                               | Required             | Description                       | Example                                                 |
| --------- | ------------------------------------------------------------------------------------------------------------------ | -------------------- | --------------------------------- | ------------------------------------------------------- |
| `error`   | [components.BadRequestResponseErrorData](/client-sdks/python/api-reference/components/badrequestresponseerrordata) | :heavy\_check\_mark: | Error data for BadRequestResponse | `{"code": 400,"message": "Invalid request parameters"}` |
| `user_id` | *OptionalNullable\[str]*                                                                                           | :heavy\_minus\_sign: | N/A                               |                                                         |