STP-O (Cancel Old) - Method for Cancel orders already placed on Order Book.
STP-N (Cancel New) - Method for Cancel incoming new orders.

[Note]
- New values will be added to "Execution Identification Code" in order to make it possible to identify whether an execution was "Zaraba" execution (including the execution by simultaneous orders) or "Itayose" execution.
- STP trigger conditions are met, STP processing is performed based on the STP type of the order that triggered the execution, but STP type are not considered for orders already placed on Order Book.