Section 16(3) in The Rajasthan Subordinate Accounts Service Rules, 1963
(3)Any person may apply to be admitted as a candidate for appointment to posts in any one or more of the Services mentioned in the notice for which he is eligible. He shall state in the application the posts in the various services he wishes to compete for and the order of his preference for such posts. The order of preference once exercised by a candidate shall not be changed.
