How to add OCO bracket to working order (Unmanaged)?

[fx.practic]

Your answer if absolutely clear, thank you.

[NinjaTrader_Jim]

Hello fx.practic,

I have attached an Unmanaged strategy that demonstrates how you can create a bracketed entry and also create stop and target orders which are OCO'd. This example builds off of concepts presented in the SampleOnOrderUpdate strategy. I have linked this strategy as well for the threads reference.

You may be able to use an existing OCO id after an order part fills, but this would be specific to the order handling dynamics governed by your broker. Their order desk would be the best person to inquire regarding those specifics. I suggest creating unique OCO id's for your OCO pair and submitting both bracketed orders at the same time for consistency between different brokers.

If an order that is OCO'd gets rejected, the other order will cancel.

SampleOnOrderUpdate - https://ninjatrader.com/support/help...and_onexec.htm

Please let us know if you have any questions.

[fx.practic]

Hello.

Unmanaged approach.

Say, I have working order, let it have the name "Tp".
When "Tp" was submitted, it had OCO paired order with "Sl" name.
And then something strange and frighten happened, and now we have one only working "Tp" order.
"Sl" is in a terminal state, or null, or filled, or rejected, or never submitted.


1.
What is the best way to have both "Sl" and "Tp" working and OCO paired?
May I use OCO string from "Tp" and submit "Sl"?
Or it depends on was "Sl" or "Tp" partial-filled before or not?

2.
What will happen with OCO bracket if one of orders was rejected?

Thank you.