As per case facts, SC/ST employee associations in public sector banks petitioned to implement reservation policy for promotions, clear backlog via carry-forward rules, and stop promotions without reservation, considering Class-1 ... concessions as reservations.The question arose whether "concessions" for SC/ST officers in Class-I promotions by selection, as per a government memorandum, amounted to "reservations" under Article 16(4) of the Constitution, thus requiring roster system and carry-forward rules for backlog.Finally, the Supreme Court ruled that the memorandum provided 'concessions' for Class-1 promotions, not 'reservations'. These allowed eligible senior SC/ST officers, if not unfit, inclusion in select lists. Since these were concessions, not reservations under Article 16(4), the roster system and carry-forward rule for backlog were inapplicable. The Court rejected demands for reservation, backlog filling, or retrospective benefits for Class-1, directing adherence to the concession framework.