I am using aws sns for sending sms to Indian phone numbers since last two months.I am using PHP SDK for api calls.
I had sent 7000+ successful messages with custom senderid relating to our company name.But since last 4-5 days same clients/phone no.s are receiving messages with aws's default senderid "NOTICE".
I am publishing messages to a topic to send sms. Now in past few pushed messages all clients got default senderid, while in few pushed messages only few clients got default id while others got my custom id.
So, where is the problem?