A Contract Note should be issued by a stock broker by the end of the day (if any transactions have been executed by the broker on behalf of the client on that particular day).
An Electronic Contract Note is sent by e-mail to the client on the same day of the transactions. A Physical Contract Note takes a few days to reach the client since it has to be sent by post to the registered address.
A Contract Note should be issued in the contract note format prescribed by the stock exchange.