Amazon SNS: “Platform credentials are invalid” when re-entering a GCM API key that previously worked

Question

We have been using Amazon SNS to send Android push notifications since April this year.

Pushes have sent with no problem, however there has never been any record of

Answer 1

I have been getting the same error when creating Amazon SNS platform application:

Invalid parameter: Attributes Reason: Platform credentials are invalid (Service: AmazonSNS; Status Code: 400; Error Code: InvalidParameter; Request ID:)

After reaching out to the Firebase support as suggested by Diego, this is the response I got from Google:

Hope you're doing well and thanks for reaching out to us.

I'm not really familiar with Amazon SNS and looks like their integration is still with GCM, not FCM. If your app implementation is still GCM, then you need to migrate with FCM in order to use the server key in the console. See the instructions here.

Also, Firebase has upgraded the server keys to a new version. We'd recommend to use the server key instead of the legacy server key.

I hope this helps. Let me know if you have any other concerns. Thank you.

This indicates that we'll have to change our app code. We were able to make this work for another app in out organization by creating a new firebase project and using the Legacy server key with Amazon SNS.

At some point we'll definitely upgrade to using FCM but at the moment we have a tight deadline.

Update: So finally what worked for us is using the 'Server Key' under Project Settings --> Cloud Messaging . The app still uses the GCM implementation. Amazon SNS is happy with this key and generated a GCM platform push application. The pushes work ! Still confused about why the 'Legacy Server Key' does not work for one app but is ok for the other. But I am not digging into it any further.