Problem maximizing a multicriteria model

GAMS
1

Hello.

I’m trying to run a model that maximizes a linear function and the problem it’s infeasible. The weird thing it’s that if I try to run the same model but minimizing the function, it runs.
Does anybody know why this happen? I’m using CPLEX.

Thanks!

-Carlos

2

Dide you perhaps confuse dual infeasible with primal infeasible. Dual infeasible often means (if there is a primal feasible point) that the primal is unbounded. -Michael