> ## 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 - Go SDK > PaymentRequiredResponseError type definition The Go SDK and docs are currently in beta. Report issues on [GitHub](https://github.com/OpenRouterTeam/go-sdk/issues). Payment Required - Insufficient credits or quota to complete request ## Fields | Field | Type | Required | Description | Example | | -------------------- | -------------------------------------------------------------------------------------------------------------------- | -------------------- | -------------------------------------- | ----------------------------------------------------------------------------------------------- | | `Error` | [components.PaymentRequiredResponseErrorData](/client-sdks/go/api-reference/models/paymentrequiredresponseerrordata) | :heavy\_check\_mark: | Error data for PaymentRequiredResponse | `{"code": 402,"message": "Insufficient credits. Add more using https://openrouter.ai/credits"}` | | `OpenrouterMetadata` | map\[string]`any` | :heavy\_minus\_sign: | N/A | | | `UserID` | `*string` | :heavy\_minus\_sign: | N/A | |