To check for invalid geometry in surfaces, surface openings, and surface regions, use the following procedure.

1. On the Model ribbon tab, select the Model Integrity Check tool in the Edit group.
   
   The Check Model Integrity dialog opens.
2. Check the Invalid geometry option for the model objects as necessary:
   • Surfaces
   • Openings
   • Regions
3. Click Validate. A list of any detected objects containing invalid geometry is displayed in the Output panel.
4. Select on the entry for invalid geometry detected in the Output panel to highlight those objects in the model.