Please note that from Tuesday 26 September 2023, in low liquidity conditions, PnL realisation for some contracts will be auto-disabled from 04:00 UTC.This will happen whenever the distance between the impact bid or the impact ask, and the mark price isgreaterthan the maintenance requirement for a contract, or if an impact bid or impact ask cannot be calculated.You can find the current state by contract and instrument tables here.These changes are to protect the integrity of the exchange and ensure a stable trading environment for all BitMEX traders. They are subject to change at any time, with short, to no notice.If you have any questions, please contact our Support Team.