Hello there! Hope you are doing good.
Yes while the correction window is open you do have the option to edit your exam code.
I advise you to keep a check on the correction window and correct the exam code as early as possible!
Hope you found this answer helpful. Good luck for your future!

Gaurav, you can edit the qualifying code during the correction window. NTA will open its correction window online from 15th January to 31st January and during this period, you can login to the official website and make the necessary changes. But do remember that this is a one time correction facility and so you need to make a note of all those corrections that you want to do in your application form and then make the necessary changes and submit. Once you click on the "Final Submit" button" you cannot utilise the correction window again.