Dematerialisation requirement before shifting to normal rolling settlement - exchanges to verify depository connectivity and certificate compliance. Companies that establish connectivity with both depositories may apply to nationwide stock exchanges to shift securities from Trade for Trade Settlement to Normal Rolling Settlement. Exchanges shall verify depository connectivity and may shift trading only if at least fifty percent of non promoter holdings are dematerialised, certified by the RTA or a practising Company Secretary/Chartered Accountant where no RTA exists, and no other grounds require continuation of TFTS. Exchanges must inform the market and listed companies of such shifts.