Special Rupee Vostro account investment permitted in Indian corporate bonds and commercial paper under prescribed guidelines. AD banks may invest surplus balances in Special Rupee Vostro Accounts in non convertible debentures/bonds and commercial paper issued by Indian companies, in terms of the guidelines and limits prescribed in the referenced AP DIR circular, with immediate effect; the instruction is issued under sections 10(4) and 11(1) of FEMA and without prejudice to other statutory permissions.