Hello Arjeet Roy....

There in no provision for corection in the application form,once submitted the details filled cannot be modified or updated ,no time is given by isi aithority for correcting the information,in case there is any error or discrepancy you should contact the concerned body immediately.here i am providing the authority address

ADDRESS

INDIAN STATISTICAL INSTITUTE,203 BARRACKPORE TRUNK ROAD,

KOLKATA 700108

PHONE:25752500

EMAIL ID:admissionsupport@isical.ac.in

All the best

Thank you