The Android and iOS advertising ID is a software-resettable unique identifier. For Apsalar attribution re-tests, there is a Apsalar system reset available. However, for some Event Tracking Console tests, and testing for deferred deeplinking, it is required that a reset on the device is performed. You can find a quick guide on how to do that below:
AndroidTo reset your advertising ID on an Android device, navigate to your "Google Settings" and click on "Ads":
Here, you can "Reset advertising ID"
iOSTo reset your advertising ID on an Android device, navigate to your "Privacy" under "Settings":
Here, you can "Reset Advertising Identifier"