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:\
(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.
3.Trading venues shall assess whether the capacity of their trading systems remains adequate when the number of messages has exceeded the highest number of messages per second recorded on that system during the previous five years. After the assessment, the trading venues shall inform the competent authority about any measures planned to expand their capacity and the time of the implementation of such measures.
4.Trading venues shall ensure that their systems are able to cope with rising message flows without material degradation of their systems performance. In particular, the design of the trading system shall enable its capacity to be expanded within reasonable time whenever necessary.
5.Trading venues shall immediately make public and report to the competent authority and members any severe trading interruption not due to market volatility and any other material connectivity disruptions.