The Trading Session Status Request <g> is used to request information on the status of a market. With the move to multiple sessions occurring for a given trading party (morning and evening sessions for instance) there is a need to be able to provide information on what product is trading on what market.
The Trading Session Status Request <g> message can be used to inquire the trading status of a trading party. The Trading Session Status <h> message can be used to subscribe to updates to the status of a trading session by setting the RequestType <263> field to 1.
To list the securities available during a particular trading session, see the SecurityDefinitionRequest <c> message.