2.The facts lie in a very narrow compass. The Writ Petitioner responded to a Notification for recruitment for Lower Division Clerk in the Ministry of Defence. The vacancies are situated in their Officers' Training Academy at Chennai. The writ petitioner is a member belonging to the scheduled caste community. His overall merit rank was No.25, whereas, his merit ranking inter se amongst scheduled caste was No.3. However, only two posts are reserved to be filled in with candidates belonged to scheduled caste community. But, by an error, the writ petitioner was offered appointment as a Lower Division Clerk and he was asked to submit his medical fitness certificate, which he did. It is at that stage, while verifying the records, it was realised that by an error, offer of appointment was made to the writ petitioner, whereas the offer should have been made only to the first and second rankers amongst the merit list of scheduled caste community, but he is the third ranker. Consequently, they cancelled the offer of appointment made to the writ petitioner. That triggered the writ petitioner to prefer an Original Application before the Central Administrative Tribunal, which was dismissed.