Attempts to switch from the current path of a multipath device
    to the path named in the /PATH qualifier. The path switch
    is attempted only if the path has not been disabled by SET
    DEVICE/NOENABLE. The path switch is initiated but not completed
    before returning control to the user; use SHOW DEVICE/MULTIPATH
    to verify that the path switching has completed successfully.

    This command requires the OPER privilege. Additionally, if the
    device is currently allocated by another process, as tape devices
    often are, the SHARE privilege is needed.