# Common Issues

### Invalid API Key

***

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

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* Check your internet connection
* Verify the API endpoint is accessible
* Check if your firewall is blocking requests
* Consider increasing the timeout value in the configuration

### PSBT Errors

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* Ensure all required parameters are provided
* Ensure the PSBT is valid and signed
* Verify the format of public keys and addresses
* Check if UTXOs are valid and confirmed

### RBF Protection Issues

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* Make sure both the main PSBT and RBF protection PSBT are properly signed
* Verify that the RBF protection flag is set to true in all relevant method calls
* Ensure the signed RBF PSBT is passed to the confirmPSBT method



For additional support, contact our support team.
