Per summary, the Cloud Network Summary page should show the ems_ref id. For AWS, at least, this seems to be the only unique key and thus what would be used programatically.
Tzu Mainn, Can you look into adding ems_ref on cloud networks summary screen. Thanks, ~Harpreet
PR to fix this was merged: https://github.com/ManageIQ/manageiq-ui-classic/pull/1521
Verified ======== 5.9.0.5
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2018:0380