Getting INVALID_SENDER on one device while its working with another GCM android

Question

I am following Android Push Notifications using Google Cloud Messaging (GCM) to implement GCM with my application it was working fine on single device (Galaxy S) wh

Answer 1

There is a project ID and the Project Number shown on the top of the Project Dashboard.

Project ID: aaaa-bbb-000000 Project Number: 00000111112

You have to use the numeric Project Number as SENDER_ID.