Is your mount not happening?
The remote host needs to be added into SC as SCW plugin host, so that you can execute the mount snapshot command.
The command will validate the path, find out hte storage, clone the LUN, get the iGroup of the remote host and map the cloned LUN there.
1. Mount-SdSnapshot -Path <svm_name>:/vol/<volume_name>/<lun_name> -Snapshot <snapshot name> -MountPath <drive_letter:> -Host > <Remote_host_name> -Verbose
2. Mount-SdSnapshot -Path <svm_name>:/vol/<volume_name>/<lun_name> -Snapshot <snapshot name> -AutopickMountPoint -Host <Remote_host_name> -Verbose
The above should be working fine with SC 4.3.1P2 and above versions.