> ## 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.

# PaymentRequiredResponseError - Python SDK

> PaymentRequiredResponseError method reference

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

Payment Required - Insufficient credits or quota to complete request

## Fields

| Field     | Type                                                                                                                         | Required             | Description                            | Example                                                                                         |
| --------- | ---------------------------------------------------------------------------------------------------------------------------- | -------------------- | -------------------------------------- | ----------------------------------------------------------------------------------------------- |
| `error`   | [components.PaymentRequiredResponseErrorData](/client-sdks/python/api-reference/components/paymentrequiredresponseerrordata) | :heavy\_check\_mark: | Error data for PaymentRequiredResponse | `{"code": 402,"message": "Insufficient credits. Add more using https://openrouter.ai/credits"}` |
| `user_id` | *OptionalNullable\[str]*                                                                                                     | :heavy\_minus\_sign: | N/A                                    |                                                                                                 |