The trading system may have been disabled for a variety of different maintenance tasks. It is important to understand what type of maintenance is required in order to determine the best course of action. Depending on the type of maintenance, it may be necessary to take the system offline for an extended period of time in order to complete the necessary repairs. If this is the case, it may be beneficial to have a backup system in place to ensure that trading continues uninterrupted. Additionally, it is important to ensure that the system is tested thoroughly once the maintenance is complete to ensure that it is functioning properly and securely. If the trading system has been functioning properly since the maintenance began, then it is likely that the maintenance was successful and that the system is now ready to resume trading.
