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52102: Invalid GCM/FCM registration token

ERROR: 52102

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NOTIFICATIONS
ERROR

Error - 52102

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Invalid GCM/FCM registration token

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Possible Causes

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  • Invalid GCM/FCM registration token provided via the Android SDK or the REST API.

Possible Solutions

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  • Make sure you do not modify the registration token before providing it to Twilio via the SDK or the REST API.
  • If you are using a command line tool to provide the registration token, make sure that it is URL-encoded.