There is no correction window per se for REAP Application form. Ideally once you fill in the application form and there are mistakes in the application form, you have to raisse a request and the authorities will look into it. So please do mail the helpdesk at: helpinadmissions@gmail.com (mailto:helpinadmissions@gmail.com) or cegreap2020@gmail.com (mailto:cegreap2020@gmail.com) from your Registered Email Id. They usually take 24-72 hours to respond. So accordingly you can either make the corrections or fill in a new application form altogether. But please reach out to the helpdesk.