When were changes made by the Sixth Schedule to the Constitution (Amendment) Act, 2003?
The changes were made by the Sixth Schedule to the Constitution (Amendment) Act, 2003 on September 7, 2003. This is evident from the provided context: "2. Ins. by the Sixth Schedule to the Constitution (Amendment) Act, 2003 (44 of 2003), s. 2 (w.e.f. 7-9-2003)."