Hello Kakunuri

As far as I remember my days in Aakash, the study centre is the number/code given to the building of Aakash (in my case) or FIITJEE (in your case) in which you are studying.  Usually they used to tell us the study centre code beforegiving the centre exams or you can find our study centre code at https://www.fiitjee.com/AITSCentres