The reservation policy in the UPSC exams is applicable to specific categories like Scheduled Castes (SC), Scheduled Tribes (ST), and Other Backward Classes (OBC). These candidates are afforded certain relaxations in minimum qualifying marks and age limits, promoting inclusivity within the civil services. The policy aims to ensure equal opportunities for underrepresented communities, enabling greater diversity in the bureaucracy. Compliance with the reservation policy reflects the commitment to social justice and equity in the civil services selection process.