I want push notification by using GCM, all things are done properly, like API key & others.
I got success & also received notification, but after sending few notifications now i'm not getting any notification & getting following erro
{"multicast_id":7413445345804388431,"success":0,"failure":1,"canonical_ids":0,"results":[{"error":"MismatchSenderId"}]}
please help for this, Thanx in advance