You can upgrade the IaaS components separately if the update process fails.
If the update process fails to upgrade the IaaS components after you reboot VMware vRealize ™ Automation, you can upgrade the IaaS components separately by performing these steps.
Revert your vRealize Automation appliance to its pre-update state.
Run a command to exclude the IaaS components from the update process. See Exclude Management Agents from Upgrade.
Run the update process on the vRealize Automation appliance.
Update the IaaS components separately using the Upgrade Shell Script or the vRealize Automation 7.3 IaaS installer msi package.