26. Whenever any alteration occurs or is made which affects any of the matters which are required under the provisions of sub-section (2) of section 3 to accompany an application by an insurer for registration, the insurer shall forthwith furnish to the Chief Controller of Insurance full particulars of such alteration. All such particulars shall be authenticated in the manner required by that sub-section for the authentication of the matters therein referred to, and, where the alteration affects the assured rates, advantages, terms and conditions offered in connection with life insurance policies, the actuarial certificate referred to in clause (f) of the said sub-section shall accompany the particulars of the alteration.