> For the complete documentation index, see [llms.txt](https://partner.paypi.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://partner.paypi.dev/api/api-errors.md).

# API Errors

{% hint style="warning" %}
If there was an error after a charge has been made causing an invalid response, users are eligible to request the cost of their request back, so ensure your API is working correctly before going live. 
{% endhint %}