Bhavika, you haven't mentioned whether you are repeating your 12th because you failed in your 12th or to improve your marks. If you have failed in your 12th and then are appearing for NEET, then your code is 01. Because Code 01 says: A candidate who is appearing in the qualifying examination, i.e., 12th Standard in 2020, whose result is awaited, may apply and appear in the test but he/she shall not be eligible for admission to the Undergraduate Medical Courses, if he/she does not pass the qualifying examination with the required pass percentage at the time of first round of Counselling. But if this is not the case, please do let us know the reason why you are reappearing for your 12th and we shall help you with relevant information. Ideally if you are appearing for betterment exams, then your code will be 02 if your 12th is from any other State other than Karnataka. But if you repeating your 12th from Karnataka, your code will be 03. Please visit the page no# 15 for complete information on Codes from the link: https://ntaneet.nic.in/ntaneet/ShowPdf.aspx?