Android FCM SDK 25.1.0 uses FCM Registration API with 100% error

[meor9zcu12]

Before version update:

com.google.firebase.firebase-messaging:25.0.2
com.google.gms:google-services:4.4.4

Everything work, topic can be subscribed and unsubscribed inside the android app

• FirebaseMessaging.subscribeToTopic
• FirebaseMessaging.unsubscribeFromTopic

After version update:

com.google.firebase:firebase-bom:34.15.0"
com.google.gms:google-services:4.5.0

These functions do not work (no response or timeout)

• FirebaseMessaging.subscribeToTopic
• FirebaseMessaging.unsubscribeFromTopic

Logcat:
Failed to sync topics. Won't retry sync. Topic subscribe failed: Not Found
Failed to sync topics. Won't retry sync. Topic unsubscribe failed: Not Found

Google Clound API Console:
After update, usage of FCM Registration API increase from 0, and then with 100% error

FCM Registration API:
Status: enabled
Credentials: Selected APIs: FCM Registration API, Firebase Installations API
Traffic by response code: 100% 404

Push by token: OK
Push by topic: not work

[eldhosembabu]

The issue is because the new topic subscription api endpoint used in the new SDK is not accessible to all firebase projects. Our backend engineers is working to make it accessible. Will keep you all posted here.

[imtangim]

I am having the same issue! Is this issue resolved? or should i just downgrade?

[wing2721843]

I just noticed that this new firebase BOM 34.15.0, it will automatically create an "Android key" under Goolge Cloud credentials, and by default the key restrictions of this is "none", so do i have to download the latest "google-servies.json" to include this key for using this new firebase BOM 34.15.0 ?

[Doris-Ge]

The backend fix has been successfully deployed. Please try again to confirm if the issue has been resolved.

[eldhosembabu]

I am having the same issue! Is this issue resolved? or should i just downgrade?

Should be fixed now. Please check again

[meor9zcu12]

I tried again and in-app topic subscription now works for me.

In addition, I noticed there is a new item Mutate Topics requests (Subscribe/Unsubscribe) per minute under FCM Registration API in Google Cloud API Console. The value is just 6000 per minute for my project.

When comparing with the number stated at Subscription throttling 3000 QPS per project, my number is relatively low and easily reached the limit if I deploy this SDK to production. Does it mean I have to migrate in-app topic subscription to server side with batching?