How to verify if we migrated correctly on FCM Http V1 api

Hello,

You can check if the migrated change is correct by checking the platform application authentication method. As per the AWS documentation, all that is required from the SNS side to migrate to the newer HTTP v1 API is to switch the authentication method to use tokens and provide the private key file from Firebase to switch to HTTP v1 [1][2].

You can also check the CloudWatch logs to verify if you are able to send the notification without any issues. If you see any errors or warnings mentioning the legacy API or deprecated endpoints on the server logs, it might indicate that the migration was not successful.

[1] https://aws.amazon.com/about-aws/whats-new/2024/01/amazon-sns-fcm-http-v1-api-mobile-notifications/
[2] https://firebase.google.com/docs/cloud-messaging/migrate-v1?hl=en&authuser=0#update-the-server-endpoint