Reusing of already used order

[misova]

Is it possible to reuse already processed order?

I mean following example:
1. Submit BUY Limit 10 cts
2. Cancel the order -> it is cancelled
3. Can I call ChangeOrder(...) with the same (now Cancelled) order to BUY again or such action would fail?


Related 2nd question:
If can reuse -> then can reuse the same way (as Cancelled order) also Rejected order ?


Related 3rd question:
Does ChangeOrder() create completely new order at exchange or it is the same order modified ?

[NinjaTrader_DaveI]

Hello,

Once an order has been cancelled, it cannot be changed, because there will technically be nothing remaining that can be changed. ChangeOrder() submits an order modification to your brokerage, which should handle the order the same way they would handle a change that you made in Chart Trader or another manual order-entry window.

Please let me know if I can assist further.

[misova]

Thanx, so if I understand it correctly
any order can be changed only, if there is some Unfilled part of the order, that could be subject of the change.

[NinjaTrader_DaveI]

Yes, that's exactly right. Once it has been filled, it is unchangeable, the same as if it had been cancelled.