Depository connectivity enables shifting securities from trade-for-trade to rolling settlement subject to dematerialisation and certification. Stock exchanges may shift securities from Trade for Trade Settlement to Normal Rolling Settlement if the issuer has connectivity with both depositories, at least fifty percent of non promoter holdings are dematerialized (certified by the RTA or, if no RTA, by a practicing company secretary/chartered accountant) and there are no other grounds for continued TFTS; exchanges must report actions taken to the regulator in their development reports.