The Principal rules were published in the Gazette of India, Part II Section 3, sub-section(i) vide GSR No 229(E) dated 1st April, 2009 and subsequently amended by GSR No. 385(E) and 386(E) dated 4th June, 2009, GSR No 6(E) dated 6th January, 2010, GSR 24(E) dated 11th January, 2010, GSR 914(E) dated 15th November, 2010, GSR 506(E) dated 5th July, 2011, GSR 680(E) dated 14th September, 2011, GSR 796(E) dated 4th November, 2011, GSR 430(E) dated 5th June, 2012, GSR 485(E) dated 21st June, 2012, GSR 692(E) dated 14th September, 2012 and GSR 333(E) dated 29th April, 2015, GSR 785(E) dated 15th October, 2015.
