Configure Model Validation
Before you perform a model validation, you enable or disable the rules that are applied by the model validator. You can define additional rules from any additional Add-Ins that might be installed besides Enterprise Architect.
Design > Package > Manage > Validation > Configure Validation Rules
On the 'Model Validation Configuration' dialog, click on the checkbox against each Validation Rule to apply in performing a model validation. Click on the to set the validation rules selected.