Compulsory dematerialised trading required for connected scrips; non connected scrips confined to trade for trade settlement. Compulsory dematerialised trading is mandated for specified listed scrips that have established connectivity with both depositories, while scrips lacking connectivity are to be traded only in the trade for trade settlement window until connectivity is achieved. Scrips that regain connectivity move to the normal trading segment with deliveries in physical or dematerialised form and then become subject to compulsory dematerialisation after a three month transition period. Exchanges and depositories must apply the classifications and timelines set out in the annexed lists.