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Thank you so much, Jürgen! How do you acquire this knowledge? Do you read through docs or code? I looked at Bracket Order ( https://interactivebrokers.github.io/tws-api/bracket_order.html ) page and

TWS API uses Double.MAX_VALUE or Integer.MAX_VALUE to indicate a field/value that is not present, not known, or not initialized. A MAX_VALUE response for initMarginChange in orderStatus (not

Yes, it is. You can also verify this manually in TWS. Internally, TWS/IBKR adds all child orders of the bracket to a single One Cancels All ( https://interactivebrokers.github.io/tws-api/oca.html )

Here is my question. I submit bracket order (main order, stop loss and take profit). Then later I cancel stop loss order order and for some reason take profit order gets cancelled as well. Is this

Hi. I have to check option order margin requirements. For that purpose Im sending whatif order and gather info from return data. But sometimes Im recieving openOrder responce:

Thank you again, Jurgen! I will post lengthy code only in external links going forward. Fun fact about child order. When setting totalQuantity the value should be numeric (could not be empty), but

*Please refrain from posting large chunks of code and log output. You cannot expect that the 6,000 members of the group spend a lot of time to understand and debug your code for you by email. And most

The example code does sets the parentID, so it does correctly attempts to have a parent/child relation. *order.orderId = app.nextValidOrderId* *stopLossOrder.orderId = app.nextValidOrderId + 1*

I hope there are less fat fingers mistake in this post then in previous one My goal is to submit parent/child order (main order and stop loss order) and then change quantity for both orders (from 17

My apologies, GreenGreen. You are correct in that you have declared the callback. But you disconnect and exit immediately after placing the order, so that your program is gone well before the callback

Thank you for clarifying, Jürgen?! I am not sure I understand you saying that my code does not handle errors from??IBApi::EWrapper::error. I do have in my code: def error(self, reqId, errorCode,

That is correct, because you are using a legitimate Python feature that has nothing to do with the TWS API. There is nothing "wrong" with your code (from a Python point of view), it just does not work

I am sorry for keeping this chat grow, but I feel this is important. I confirmed that when I submit *stopLossOrder.OrderType = "STP"* (incorrect capitalization) , there is neither error message in

Thank you so much, Jürgen! What a blunder on my side! Still, I wish there would be better error message at least in logs

thank YOU Jürgen !

Just a quick reminder. There are 6,000++ members listening and this post is becoming more like a chat. The error message (assuming it is related) is pretty clear. Please clean up the order type

As far as I understand, there is no particular designation for parent order. When we write stopLoss.parentId = some_integer, that is where parent child connection is established. For the sake of

I didn't see *any* parent order in your code... are we overlooking something? Did you post the same code you're using? Are you sure you don't want to follow the instructions from IB? Or do you still

I don't really know, but from docs: parent order should be submitted with transmit = False and child order (stop loss) with transmit = True. This way system ensures that both orders submitted

Do you think that could be because it saw a _transmit_ on an individual order that wasn't part of a parent order?