This appeared as I migrated from 10.23 to 10.34 (tested with 10.30, same thing). Previously it worked fine.
I have read all previous posts related to this error. I made sure parentId=0, but it made no difference. I turned off all precautions and warnings. No love. Other points discussed did not seem immediately relevant to my situation.
The error code does not appear in any IB documentation I have been able to find.
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What I do is very simple. For ES or NQ (mini futs) I enter a bracket, let's say to buy (LMT) with 2 OCA children, one profit-taking sell (LMT), the other sell STP.
I get filled and all looks good, two open orders appear. Let's call this state of affairs 1. If either gets filled, the other disappears as one would wish. So far so good. We can call this state 2.
But ... the problem occurs if in state 1, with the 2 OCA children still open, I decide to change the price in the profit-taking LMT.
That's when I get?
10326 OCA group revision is not allowed
The request is ignored, and the 2 OCA orders stay open unaltered.
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This probably doesn't matter much, but my rationale for changing the price is to trigger the sell and close the position with minimal hassle, because my model views further waiting under the circumstances as unlikely to bear fruit. I suppose I could cancel and exit via MKT sell, but this seems simpler, more graceful, it used to work fine, and I miss those days.
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I use ocaType=2, in case this is relevant.
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Any help would be greatly appreciated.
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