> For the complete documentation index, see [llms.txt](https://doc.duaer.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/integrations/builtin/app-nodes/n8n-nodes-langchain.openai/common-issues.md).

# Common issues with OpenAI in Duaer

This page covers common errors Duaer links to when you use OpenAI. Check the credential and node parameters before chasing the error text.
## Quota and rate limits <a href="#insufficient-quota" id="insufficient-quota"></a>

When Duaer calls OpenAI and the provider returns insufficient quota or a rate limit, check the plan and usage in that provider’s console first. Then confirm the model or resource on the node is still allowed.

A valid credential can still hit a quota error. Before you rotate the key, confirm the allowance is not simply exhausted.

## Other checks

Confirm the OpenAI credential points at the right environment and that required node parameters are filled. When a product error links here, follow the error text plus the checks above.
## Questions

### What should you do first when Duaer reports an insufficient OpenAI quota?

Check usage and plan in the OpenAI provider console, then the model or resource selected on the Duaer node. A valid credential can still mean the allowance is used up.