By linking the solver error messages to the geometry, you can more easily resolve any errors in the Simulation study setup. The error messages are listed in a What’s Wrong dialog box next to the study feature where the error was detected.
When the solver identifies an error with a feature, it marks the feature in the study tree with a warning icon 
and adds a solver message.
For errors while formulating the mesh, the solver highlights the mesh element or node in the graphics area.
