Section 65 in The Companies (Indian Accounting Standards) Rules, 2015
65. Valuation techniques used to measure fair value shall be applied consistently. However, a change in a valuation technique or its application (e.g. a change in its weightage when multiple valuation techniques are used or a change in an adjustment applied to a valuation technique) is appropriate if the change results in a measurement that is equally or more representative of fair value in the circumstances. That might be the case if, for example, any of the following events take place:
(a)new markets develop;(b)new information becomes available;(c)information previously used is no longer available;(d)valuation techniques improve; or(e)market conditions change.
