Using IBController 1.3.8 and TWS 978, I receive error 10067 when changing only the number of shares in a trailing stop order using the following:
StopLossOrderID = ibc.ModifyOrder( "32122", "MESU1-GLOBEX-FUT", "SELL", 73, "TRAIL", 0, 22.25, "GTC", True, 50000, "", "", "", 1, "" );
The error is: 10067. Stop price must be changed together with the trailing amount for a trailing order
TWS then shows a yellow update button for this order, but it really doesn't make any change other than the number of shares... it accepts the same value for the trailing stop that I had submitted already.
If I actually do change the trailing amount, the error does not appear. However, I don't want to change the trailing amount.
I can't find any documentation of this requirement at the following pages:
And I can't find this error code in the API docs:
Is there any way around this error, other than cancelling and sending a new order?