Customers are not able to place a Maker Order and Taker Order which would result in self-execution. If the Maker Order and Taker Order are of the same quantity which would result in self-execution, both Orders will be cancelled.
If the Maker Order and Taker Order are of different quantities that would result in self-execution, the smaller of the two Orders is cancelled and the larger of the two Orders is reduced by an amount equivalent to the smaller quantity. The remainder of the larger Order remains Open.