certain guidelines which would be applicable to the participants and the participating institutes. In the said COAP, there are four rounds with three options i.e, Accept and Freeze', Reject and Wait and Retain and Wait. In the fourth round, petitioner chose the option 'Accept and Freeze' and petitioner was offered seat at IIT Dhanbad. It is stated that as per the guidelines of COAP i.e., 2.8, 2.9 and 2.10, the availability of seats in particular institute would be shown on the institute website and the seats would be filled in spot/additional rounds conducted by the institutes and the same will be in accordance with the procedure adopted by the respective institutes. It is stated that the aforesaid COAP guidelines did not prescribe that a candidate participating in COAP and retained/accepted a seat would be ineligible for spot/additional rounds of admission. There was no prior procedure or information or clarification on COAP with regard to IIT in combined online spot offers (Round A, Round B, Round C) also from July, 08, 2018 to July, 19, 2018. It is stated that after completion of COAP process, the 4th respondent institute notified vacancies to be filled up for M.Tech-CS (TA) 2 year programme and that the petitioner received an E-mail on 22.07.2018 to attend interview which was scheduled on 26.07.2018, to which the petitioner replied that he would be attending the said interview. Subsequently, the petitioner received e-mail stating that the guidelines of