At least, take the time to actually read and understand my post before making condescending comment. I bought 1 share at market and attempted to sell 1 share at market. Look at the screenshot 1st trade was filled at $42.14, the 2nd and 3rd market orders to sell didn't go thru. Finally the 4th trade filled at 37.52. In the 2nd screenshot, you can see why my orders were rejected when I am hovering over them which are represented by the red exclamation marks.
As you can see my order was rejected because I was attempting to sell 1 share of my position. That should not happen. You don't need 2k minimum or margin to sell your position. (That's only when you go short.) The 2nd and 3rd orders was clearly some kinda mixup or glitch.
I am using Medved trader which is alternative platform to TWS so maybe it can be from their end. It's a bit iffy when 3rd party software attempt to integrate with TWS. Their api is way complicated and outdated.
Either they mistaken a sell order as a short order or a delay in realizing I already had a position. So a sell order became a short order instead.
Hope that is more clarifying to my original post!