Eligibility criteria for candidates from reserved categories in UPSC are specified under the guidelines established by the commission. These categories include Scheduled Castes, Scheduled Tribes, and Other Backward Classes. Applicants from these groups enjoy certain relaxations, such as age limits and number of attempts allowed in the civil service exams. These measures aim to promote inclusivity and provide equitable opportunities for candidates who have historically faced disadvantages in accessing quality education and employment. Understanding these criteria is essential for aspirants seeking to utilize these provisions.