Dear Shaik, the last date to fill in GATE online application was closed on October 5th along with the late fees. You cannot fill in another application. Now there are 2 things to it. Check the Status of your application. Login to the GOAPS website with your login details and check the Status. If it says either "Approved" or "Completed" then you will not need the seal and signature of the document. Or else, if the Status says "Under Scrutiny", wait until the application is checked. If they need anything that needs to be corrected, they will reach out to you through the registered email or mobile no# and you can make the changes accordingly during the correction window or by the timeline they would give you. IIT Delhi will open the correction window tentatively during the 4th week of October and then you can make the changes to your application.