Hello Susmita,

There's no correction window for SSC CHSL, so you need to fill the form correctly,and in your case your have entered wrong year,it means there's high chances of cancellation, so it will be better if you login with new email ID, and fill new application form, after cancelling your existing application, there's a nominal fees for application and it's feasible, so that you don't have to miss your chance.

I hope it helps,

Best of luck.