A shortlisted application means that the property manager has selected your application to view your stage two information. This means the property manager now has access to your full information and you will be notified through email as soon as this has occurred.
This does not necessarily mean that your application will be successful, it simply indicates that your entire application is now visible to the property manager. They will be in touch through email if you are successful.
If you have any queries regarding this, feel free to get in touch with the property manager directly.