"Error Do not power on VM <vm-name> as the guest customization was skipped"
Warning Cannot customize VM with unsupported guest hostname. The hostname cannot be unset. It can only have letters, numbers, and hyphens (-); it cannot contain periods (.), underscores (_), or blank spaces."
VMware Live Cyber Recovery 7.27.x
VMware Live Cyber Recovery 7.26.x
This is expected behavior when a VM contains an unsupported character in its hostname or its FQDN
Remove the unsupported characters from the VM's hostname.
Workaround:
You can manually power on the VM in the recovery SDDC, however it will continue to encounter the issue until hostname is resolved for subscquent attemp using recovery plan.