Command("PLACE","SIM101","AAPL","BUY",200,"STOP",0 ,612.50,"DAY",<GUID>,"","TrailingStop","")
Command("PLACE","SIM101","AAPL","SELL",200,"STOP", 0,612.40,"DAY",<GUID>,"","TrailingStop","")
I've specified the same OCO ID (<GUID>) for both orders. However, when one executes, the other does not cancel. Am I missing something?
Thanks.

The additional order that I was seeing was not the other side of the (uncanceled) OCO order but rather the Trailing Stop from the attached ATM Strategy which is exactly right.
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