(Article 48(1) of Directive 2014/65/EU)

1. Trading venues shall ensure that their trading systems have sufficient capacity to perform their functions without systems failures, outages or errors in matching transactions at least at the highest number of messages per second recorded on that system during the previous five years multiplied by two.

For the purposes of establishing the highest number of messages, the following messages shall be taken into account:

(a) any input, including orders and modifications or cancellations of orders;

(b) any output, including the system's response to an input, display of order book data and dissemination of post-trade flow that implies independent use of the trading system's capacity.

2. The elements of a trading system to be considered for the purposes of paragraph 1 shall be those supporting the following activities:

(a) upstream connectivity, order submission capacity, throttling capacities and ability to balance customer order entrance through different gateways;

(b) trading engine which enables the trading venue to match orders at an adequate latency;

(c) downstream connectivity, order and transaction edit and any other type of market data feed;

(d) infrastructure to monitor the performance of the abovementioned elements.