Virtual Machine <VMname> is unavailable and will be skipped from processing.
This error occurs when a virtual machine's unique inventory reference identification number (MoRef or Managed Object Reference) changes within the virtual infrastructure, or the virtual machine is deleted. The virtual machine is still in the Backup Job, and when the job starts, the job is still attempting to find the VM by its old reference ID.
Note: The most common events that cause a VM MoRef ID to change are:
If the VM was removed from the infrastructure and no longer exists, remove it from the backup job.
If the VM exists in the environment, and the Backup job is throwing the error "Virtual Machine is unavailable and will be skipped from processing." The VM must be re-added to the Backup job.
Re-add the VM to the Job