SEBI:To streamline procedures for issuance of debt securities on private placement basis, enhancing efficiency, transparency of the price discovery mechanism and improving liquidity in the secondary market, SEBI has made electronic book mechanism mandatory for all private placements of debt securities in primary market with an issue size of Rs.500 crores and above, inclusive of green shoe option, if any. Electronic book mechanism will be optional for the issues below Rs 500 crore, but the issuers will have to disclose the coupon, yield, amount raised, number of investors and category of investors to the Electronic Book Provider or to the information repository for corporate debt market, in the format specified by SEBI. The circular will be effective from July 1.