fcm specific device is fail (by the way share good test online )

[mygoodboy]

Step 1: Are you in the right place?

##FCM test online provided
http://pushtry.com/
1.
server key
AIzaSyC2njH1jXYSIINca9f3Il9tu8scOnNI6EQcontent_copy
2.
/topics/anything
3.
anydata
it is success{"message_id":8393642056815307902}
but i want to set specific device

this my information of android app

專案 ID elated-emitter-218305
網路 API 金鑰 AIzaSyDQPBImnDBDTk0Y6lc_OCUQB4SDdnJ2mg4
android app testapp com.company.testapp
應用程式 ID 1:911344285318:android:f83f248dcd2aa534
應用程式暱稱 testapp
套件名稱 com.company.testapp

it is fail when replacing /topics/anything with 1:911344285318:android:f83f248dcd2aa534
InvalidRegistration

[kroikie]

@mygoodboy Looks like you are using the wrong thing for the device/app identifier. You want to use the Instance ID token. That token is made available via the onNewToken callback or you can retrieve it manually from FirebaseInstanceId.getInstance().getInstanceId().