> For the complete documentation index, see [llms.txt](https://docs.satsterminal.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.satsterminal.com/trade/swap-sdk/common-issues.md).

# Common Issues

#### Invalid API Key <a href="#invalid-api-key" id="invalid-api-key"></a>

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Ensure your API key is valid and properly configured. Only approved partners can use the SDK.

{% hint style="info" %}
Apply for an API key here: [Sats Terminal Partnership Form](https://docs.google.com/forms/d/e/1FAIpQLSeTH9w1hVZQRLpu0gPjTM67gauuU2G95sy6vWpI9EJkb6Iz4g/viewform?usp=send_form)
{% endhint %}

#### Network Errors <a href="#network-errors" id="network-errors"></a>

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* Check your internet connection
* Verify the API endpoint is accessible
* Check if your firewall is blocking requests

#### PSBT Errors <a href="#psbt-errors" id="psbt-errors"></a>

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* Ensure all required parameters are provided
* Ensure the PSBTs are valid and signed
* Verify the format of public keys and addresses

***

For additional support, contact our support team.