type t = {mutable request_id : Dtcprotocol_piqi.protobuf_int32 option;mutable total_num_messages : Dtcprotocol_piqi.protobuf_int32 option;mutable message_number : Dtcprotocol_piqi.protobuf_int32 option;mutable symbol : string option;mutable exchange : string option;mutable previous_server_order_id : string option;mutable server_order_id : string option;mutable client_order_id : string option;mutable exchange_order_id : string option;mutable order_status : Dtcprotocol_piqi.order_status_enum option;mutable order_update_reason : Dtcprotocol_piqi.order_update_reason_enum option;mutable order_type : Dtcprotocol_piqi.order_type_enum option;mutable buy_sell : Dtcprotocol_piqi.buy_sell_enum option;mutable price1 : Dtcprotocol_piqi.float64 option;mutable price2 : Dtcprotocol_piqi.float64 option;mutable time_in_force : Dtcprotocol_piqi.time_in_force_enum option;mutable good_till_date_time : Dtcprotocol_piqi.int64_fixed option;mutable order_quantity : Dtcprotocol_piqi.float64 option;mutable filled_quantity : Dtcprotocol_piqi.float64 option;mutable remaining_quantity : Dtcprotocol_piqi.float64 option;mutable average_fill_price : Dtcprotocol_piqi.float64 option;mutable last_fill_price : Dtcprotocol_piqi.float64 option;mutable last_fill_date_time : Dtcprotocol_piqi.int64_fixed option;mutable last_fill_quantity : Dtcprotocol_piqi.float64 option;mutable last_fill_execution_id : string option;mutable trade_account : string option;mutable info_text : string option;mutable no_orders : bool option;mutable parent_server_order_id : string option;mutable ocolinked_order_server_order_id : string option;mutable open_or_close : Dtcprotocol_piqi.open_close_trade_enum option;mutable previous_client_order_id : string option;mutable free_form_text : string option;mutable order_received_date_time : Dtcprotocol_piqi.int64_fixed option;mutable latest_transaction_date_time : Dtcprotocol_piqi.float64 option;}