Guidelines:
1. While setting up the model, keep "check model validity" option from mesh control as "ON".
2. Check "Validity block" from cadModel.log has any errors. If yes fix those.
3. Create Simulation model and check if model is valid from log file.
4. If model is valid then go the mesh. If mesh is succesful then export the solver deck.
5. If mesh gives any errors, then fix those.
6. If mesh gives no clue then check other errors (beyond validity block from cadModel.log) and fix those.
7. If validity block has no errors then check command Action--Check--NonManifold model validity with geometry check. See if it gives any errors in cadModel.log and fix those.
8. If meshing still fails raise an issue to Meshing developer.
9. In production mode, user can set up model "check model validity" option from mesh control as "ON".
Please check below flow chart for more details.
