You can check the api log to see what was actually sent to IB.
Depending on the language and how floating point numbers are converted to text their may be differences in rounding from what you show in your logs.
The api log should help you track down the issue (either sending an invalid price or an issue on IB's end).
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On 10/22/2021 6:50 PM, Lou Dudka wrote:
and received the error on the BKT StopLoss order STPLMT Shr:290 Limit:45.40 Aux:41.40
Error 110. The price does not conform to the minimum price variation for this contract
