Shuts off a few reductions in order to allow presolve to transform any constraint on the original model into an equivalent constraint on the presolved model. You should consider setting this parameter to 1 if you are using callbacks to add your own cuts. A cut that cannot be applied to the presolved model will be silently ignored. The impact on the size of the presolved problem is usually small.
For examples of how to query or modify parameter values from our different APIs, refer to our Parameter Examples.