Trading Session Status Request StandardHeader Standard Header Y MsgType = g (lowercase) 335 TradSesReqID TradSesReqID Y Must be unique, or the ID of previous Market Data Request to disable if SubscriptionRequestType = Disable previous Snapshot + Updates Request (2). 336 TradingSessionID TradingSessionID N Trading Session for which status is being requested 338 TradSesMethod TradSesMethod N Method of trading 339 TradSesMode TradSesMode N Trading Session Mode 263 SubscriptionRequestType SubscriptionRequestType Y StandardTrailer Standard Trailer Y