What does this error message mean?

[Newtrader101]

[NinjaTrader_Jason]

Hello Newtrader101,

The error indicates the order could not be submitted as it uses the same OCO ID as a previous OCO order set. Please right click in the order entry window you use and disable "OCO Order". Subsequently you should be able to submit orders again.

If you make use of "OCO Order" from the right click menu in order entry windows, please always disable it after you submitted the orders that you want to be OCO (one cancels other). If you keep it enabled, you will experience this order rejection as all subsequent orders will use the same OCO ID.

Please feel free to post any additional questions you may have.