I'm developing a strategy outside Ninja, and using the DLL ATI to send orders to Ninja. When I try to send an specific order to trade an option with TD Ameritrade I get a rejection message from Ninja, I see this message on the Log: "holds unknown instrument". But when I try to place an order using "Basic Entry" window on Ninja it works fine.
Please let me know if you have a solution for this.
Thank you,
Felipe
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