This message appears if your model contains multiple "alldifferent" constraints and one or more variables are included in more than one “alldifferent” constraint. An “alldifferent” constraint specifies that a group of integer variables must have distinct values in the solution. The OptQuest engine does not support the use of a variable, or variables, appearing in multiple "alldifferent" constraints. To use the OptQuest Solver, you must re-formulate your model so each "alldifferent" constraint contains a unique set of variables.
