When a Zone is removed from a Namespace in a VCF Automation (VCFA) organization, the removal operation appears stuck indefinitely in a "Deleting" state and never completes, even though the Zone no longer appears when viewing the Namespace's editable Zones list.
Symptoms:
This behaviour is expected by design. However, an enhancement request has been suggested to add explicit UI messaging or a blocking validation in a future release when a Zone removal is requested while VMs still exist in that Zone.
To successfully remove a Zone from a Namespace: