The application of this property depends on which third party optimization engine is loaded. If Ipopt is loaded, this value is used to set the "constr_viol_tol option". If SNOPT is loaded, this value is used to set the "Major feasibility tolerance" and the "Minor feasibility tolerance". If NLopt is loaded, this value is used to set each of the individual constraint tolerances.
Timing Precision Mode
This page describes functionality in nanosecond timing precision mode.