Article 5a 1.

A market participant that engages in algorithmic trading shall have in place effective systems and risk controls suitable to the business it operates to ensure that its trading systems are resilient and have sufficient capacity, are subject to appropriate trading thresholdsand limits and prevent the sending of erroneous orders to trade or otherwise function in a way that may create or contribute to a disorderly market. The market participant shall also have in place effective systems and risk controls to ensure that the trading systems comply with this Regulation and with the rules of an OMP to which it is connected. The market participant shall have in place effective business continuity arrangements to deal with any failure of its trading systems and shall ensure that its systems are fully tested and properly monitored so that they meet the requirements laid down in this paragraph.