I have never seen this message in TWS before. Out of the blue, I have to specify how much to allocate to each account. I have a position in 1 of my accounts, and I can't sell it because of this error message. IB professional help has gone home for the day, and their retail division can't help. Any idea what to do with this problem? There is a note that I read at their website that I believe addresses the problem, but I'm not sure what to do about it. "Trades that are not allocated are routed to the default instruction at 6:00 pm ET."