I don’t know the finer details but it sounds like a standard margin call. A position blows up, you need to cover as you’re over margin limits and the broker not

I don’t know the finer details but it sounds like a standard margin call. A position blows up, you need to cover as you’re over margin limits and the broker notifies you that you need to deposit a certain amount or they will sell other holdings to cover. Was there something more to it?