Section 21(1)(b) in Conduct of the Government Litigation, Rules, 2000
(b)He shall also apprise the administrative department concerned on any of the following points:-(i)Vires or legality of any legislative enactment or statutory rule has been challenged;(ii)Executive orders or executive actions of Government and/or its officers have been challenged and the matters is such which not only affects the rights of the rival parties, but also the interest of Government;(iii)Any taxation matter has been challenged;(iv)Any application for stay or any interim order has been made.