Restoring a VM to DR will bomb the error message "Failed to add VM to target server's Inventory". But restoring it on the same host where it came from is successful.
The backed up VM may contain the following:
The VM must have no mounted ISO, CDROMs and RDMs before it is backed up. If the DataStore name of Source and Target ESXi hosts are different from each other, Relocate to alternative datastore must be set in the Restore Job and enter the DataStore name of the target host where you want the VM to be.