Creo Parametric Errors Related to CAD Integration

Error Message Cause of Error
The CAD model regenerated successfully, but some features are unattached.One or more Creo Parametric model feature became unattached either prior to or as result of parametric change and regeneration initiated by Workbench Plug-In.
Unable to select one or more items from selection, possible corrupted WB parameters within Pro/E model.The Ansys Workbench Plug-In stores named selection data as Creo Parametric Model Parameters with prefix WBNS or WBAC. When this message is displayed the Named Selection Manager likely failed to complete the specified add, remove or rename operation because one of these parameters was modified or deleted.
Unable to delete one or more items from selection, possible corrupted WB parameters within Pro/E model.
Unable to rename one or more items from selection, possible corrupted WB parameters within Pro/E model.
Cannot activate different model with same name as model in session. User is attempting to activate a model of the same name and different path when attaching models in the Ansys Mechanical application.
Entered non-integer value for XXX Truncating value.When changing the value of a parameter in the Ansys Mechanical application, if the originally defined parameter is of integer type and you enter a non-integer value this message will be displayed as a reminder for future updates.
Warning: Pro/E Asm does not use consistent unit system.A component part does not have the same unit system as the assembly. This is a requirement as indicated in the documentation. The component name is visible in the progress window at the time this error occurs. You are advised to terminate the attach (by clicking Cancel in the progress window) and returning to Creo Parametric to bring all components of the model to the same unit system. If you wish, you may allow the attach to continue to its completion making note of all components that generate this warning, then return to Creo Parametric to make changes. In some instances only the assembly must be modified instead of the parts. If allowed to import entirely, the model is likely to have graphics and selection problems. These will be remedied when the model is imported after changes are made to the Creo Parametric model.