So, what is the solution

There is no modification option available once you have submitted your application form. ssc do not give any kind of option for modification. so the solution to this is you can either apply for a new application because it is much easier through another email and mobile no. with registering again. and one another solution is that when you will be going for DV and will not be able to submit the EWS category then you will be taken as general category student and you must be able to clear cut offs of general. these are the possible steps you can do.

Sanjay Khandelwal For correction of application form i will create the another gmail and mobile number with that Gmail I will write the exam once more?