It was on a Friday, 6 April, that the Reserve Bank of India (RBI) dropped the bomb. A circular. Its innocuous title was “Storage of Payment System Data”, which didn’t suggest what was in store at all. But in 15 very to-the-point lines, it twisted the knife deeper in the back of multinationals with each word. It said all payment processors need to store end-to-end transaction details and all associated data in the country.