Determine whether each situation below can be recognised as a change in accounting policy or a change in accounting estimates and explain the accounting treatment for each situation.

(a) During the year ended 31 December 2021, Setia Berhad revised its accounting measurement of the investment property from the cost model to the fair value model. The cumulative effect due to the change of measurement of investment property for the prior years cannot be determined. At the beginning of the current year, the carrying amount of the investment property was RM220 million. The fair value on that date was RM260 million. At the end of the current financial year, the fair value was determined at RM270 million. Retained profit brought forward as of 1 January 2021 was RM960 million.

(b) An equipment costing RM100,000 and a residual value of RM4,000 was acquired on 1 January 2020 and depreciated on a straight line basis over 10 years, As of 1 January 2022, the remaining use life of the equipment was revised to 4 years with no residual value.