You can check your CATIA V5 model at any time during your session to determine whether any problems exist in the model specification. Use the Model Checker icon to check whether your CATIA V5 model is consistent. You can use the model checker Complete Property function to copy properties within the model and to complete items that are missing or inconsistent. The model checking tool is documented in more detail in the CATIA V5 Generative Structural Analysis User's Guide.