obj
The specified granularity indicates the acceptable precision for the objective function's value with respect to decision-making. If the granularity is 0 then no rounding will be applied when evaluating the objective function. Granularity defines the level of precision for variable to which the problem will be solved. Setting granularity to 0, the default, means that the solver should attempt to find a solution to the level of machine precision. For any positive granularity value, the solution will be found to some multiple of that granularity. As a special case, setting granularity to 1 implies an integer-ordered input variable. The specification of granularity reflects a reality for the decision maker that there is a level of precision beyond which it is not practical to implement a solution.