# Limitations and Additional Considerations

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## Limitations and Additional Considerations

We should note a few additional considerations for solving multi-scenario models.

Nearly any model can serve as the base model in a multi-scenario model. The base model can be continuous or discrete, and it can contain quadratic constraints, general constraints, SOS constraints, semi-continuous variables, etc. One important exception is multiple objectives; a multi-scenario model can only have a single objective.

The IsMIP attribute will always be 1 for a multi-scenario model, even if the model is otherwise continuous.

Multi-scenario models can have lazy constraints, specified either through a user callback or through the Lazy attribute. Those that are provided through a callback must be valid across all scenarios. Those that are specified through the Lazy attribute can have different right-hand side values in different scenarios.

You can also add your own cutting planes to multi-scenario models through a user callback. Cuts must be valid across all scenarios.