This is the notification function called before saving each model.

Users must supply this function by calling ProNotificationSet() with the notify type PRO_MODEL_SAVE_PRE_ALL.

If this function returns an error, the saving action will be aborted by Creo Parametric for this model. This is called for kinds of user actions (Save A Copy, Checkin) which do NOT call ProModelSavePreAction. May be called more than once due to conflict resolution.