The search space can be huge when searching in model artifacts (magnitudes of around 10150 for models of 500 elements). By handling the nonconforming individuals, the search space can be drastically reduced. We present a set of nine generic strategies for handling nonconforming individuals that are ready to be applied to model artifacts. The strategies are independent from the application domain and only include constraints derived from the meta-object facility. We have made public the source code of an open-source implementation of the nine strategies: