Hello Sir,
Yes, but this is IMRG_INS[] table. I am getting that value( Please have a look at the Screen Shot from my previous message). But, I was expecting IMPTT_INS[].
Anyways, I realized that IMPTT is a Master Record(Measurement Point Table) which would already exist at the time of Reading(IK11/IW42), and so, instead, I am fetching that data directly from IMPTT.
Notification works well now. 
Regards,
Udit