Section 5(2) in The Orissa Reservation of Vacancies in Posts and Services (for Scheduled Castes and Scheduled Tribes) Rules, 1976
(2)[ In case of promotion on the basis of seniority subject to fitness, the vacancies reserved for Schedule Caste and Scheduled Tribe and remaining unfilled on the ground of non-availability of candidates belonging to these communities, shall not be filled up without being de-reserved by the appointing authority by taking orders of the next higher authority.
