In each OUCH partition, the exchange provides a TAP as a purge port that can be connected only by OUCH (Mass Cancel) user.
When a user uses a purge port, the orders from non-OUCH (Mas Cancel) users will not be affected when Mass Cancel is used.
Use of a purge port is optional.
Since the functionality of a purge port is the same as the other TAPs, Exchange has not identified any significant differences in latency or other factors.
Please note that OUCH (Mas Cancel) user is available only to users designated as Primary Market Makers.