> ## Documentation Index
> Fetch the complete documentation index at: https://portkey-docs-chore-backend-change-log.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Errors

Portkey uses conventional response codes to indicate the success or failure of an API request. In general: Codes in the `2xx` range indicate success. Codes in the `4xx` range indicate an error that failed given the information provided. Codes in the `5xx` range indicate an error with Portkey’s servers (these are rare).

## Common Errors

During request processing, you may encounter error codes from either Portkey or the LLM provider:

| Status Code | Description | Source |
| - | - | - |
| `408` | Request timed out | Portkey OR Provider |
| `412` | Budget exhausted | Portkey OR Provider |
| `429` | Request rate limited | Portkey OR Provider |
| `446` | Guardrail checks failed (request denied) | Portkey |
| `246` | Guardrail checks failed (request successful) | Portkey |

<Note>
  Provider-specific error codes are passed through by Portkey. For debugging these errors, refer to our [Error Library](https://portkey.ai/error-library).
</Note>

***

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## Related topics

- [Errors](/api-reference/admin-api/error.md)
- [Common Errors & Resolutions](/support/common-errors-and-resolutions.md)
- [Get errors data](/api-reference/admin-api/control-plane/analytics/graphs-time-series-data/get-errors-data.md)
- [Get error rate data](/api-reference/admin-api/control-plane/analytics/graphs-time-series-data/get-error-rate-data.md)
- [Unified LLM API with Automatic Failover & Error Handling](/guides/use-cases/enterprise-ready-unified-api.md)


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