Details on Changes to Websocket Margin and Account Topics

As part of our continuous improvements to the BitMEX platform, on 5 October 2021, we will add the following columns to themargintopic:

• makerFeeDiscount

• takerFeeDiscount

These fields exist on theaccounttopic as well, where they will initially remain and be set tonull. We will decommission these fields from theaccounttopic at a later date and will not announce it.This change affects both REST queries and Websocket subscriptions – please update your applications if you currently use these fields.These changes will be made in Testnet on 30 September 2021.Should you have any questions, please contact Support.