Backup systems typically identify vApps to be backed up in a given Organization based on their identity, using vApp attributes such as name and ID or user defined metadata. A set of vApps to be backed up can also be created based on their Organization (for example, all vApps in the Human Resources Organization), the VDC where they are deployed, and so forth.
In all these cases you must traverse the given Organization and its contents to locate and make a list of vApps.
