lookup_passwords command, only administrator account information for the Management Domain vCenter is displayed.VMware Cloud Foundation 5.X
vCenter Servers of Management domain and Workload domain are in Enhanced Linked Mode by default. They use the unique SSO administrator account [email protected]. Only one instance of administrator credentials is showed in SDDC Manager.
This works as design. Password management of the SSO administrator account of vCenter Server in Management domain will also take effective for the one in Workload domain. See Information Security Design for VMware Cloud Foundation