Originally, Article 338 provided for a Special Officer for Scheduled Castes and Scheduled Tribes. The 65th Amendment Act, 1990, replaced this officer with a multi-member National Commission for SCs and STs under Article 338. Later, the 89th Amendment Act, 2003, bifurcated this body, establishing a separate National Commission for Scheduled Castes under Article 338 and a National Commission for Scheduled Tribes under Article 338-A.