Markets regulator Sebi (Securities and Exchange Board of India) on Wednesday said the electronic book ( ebook) mechanism will be mandatory for companies raising debt via private placements, aggregating to Rs.500 crore or more in a single financial year. The move will help streamline procedures for issuance of debt securities on private placement basis, boosting efficiency, transparency of the price discovery mechanism, and improving liquidity in the secondary market. The e- book mechanism is mandatory for all private placement issues on debt basis for more than Rs. 500 crore from July 1. "Further, in case, the issuer comes with multiple issues in afinancial year which are individually less than Rs.500 crore, but the aggregate issue size in the same year crosses Rs.500 crore, in such a scenario, issuer shall use the e- book mechanism for any incremental private placement," Sebi said. The regulator said the mechanism is voluntary for those issues of debt securities whic