> ## Documentation Index
> Fetch the complete documentation index at: https://docs.joinmassive.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How do I handle errors and debugging?

### Windows:

MassiveStatus enum includes these error states:

* `INVALID_ARGS`: Invalid arguments passed to function
* `UNINITIALIZED_SERVICE`: Service not initialized
* `INITIALIZING_SERVICE`: Service is initializing
* `ALREADY_STARTED`: Node already started
* `CORRUPTED_INSTALLATION`: Installation is corrupted
* `INTERNAL_ERROR`: Internal error occurred

### Android/Fire OS:

* Provides callbacks for the `init`, `start`, and `stop` methods to handle errors.

### iOS:

* Provides callbacks for the `initAsync` method to handle errors.
* Requires checking the return values of the `start` and `stop` methods.

Learn more about error handling:

* [Android](https://docs.joinmassive.com/monetization-sdk/mobile-android#technical-details)
* [Windows](https://docs.joinmassive.com/monetization-sdk/desktop-windows#api-reference)
* [iOS](https://docs.joinmassive.com/monetization-sdk/mobile-ios#technical-details)