Recordkeeping obligations require members to retain exchange books and client records under specified retention periods. Members of a recognised stock exchange must maintain and preserve certain books of account for five years-including the Sauda book, clients' ledger, general ledger, journals, cash book, bank pass-book and a documents register of shares and securities-and must retain members' contract books, counterfoils or duplicates of contract notes issued to clients, and written client consents for two years.