If you are working with an assembly, you can check the number of bodies in your assembly by requesting error detection when you start your analysis.
During the error detection cycle,
Creo Simulate informs you of how many bodies it finds in your assembly. If this count does not agree with the number you expect, review the assembly in
Creo Parametric and correct any mating problems. Then, return to
Creo Simulate and add loads or constraints to any bodies that require them. For more information, see
Assembly Considerations.