Bankers' cheques and other monetary instruments will have only a three-month validity beginning April 1, 2012, instead of the existing six months, a Reserve Bank of India (RBI) communique has said.The change is a consequence of an RBI notification on November 4, 2011.Cheques, drafts and pay orders will have a validity for three months from the date they've been drawn. Those having cheques and other monetary instruments with six-month validity before April 1 will have to remit them before this date, when the expiry of the validity will...