hardware_handler parameter of MSA2040 at RHEL 7.4

There was a path problem with RHEL 7.4 on server superdome x:

Jul 26 02:47:49 ictasstgdb01 kernel: sd 0:0:0:0: alua: Detached
Jul 26 02:47:49 ictasstgdb01 kernel: sd 0:0:0:0: [sda] Synchronizing SCSI cache
Jul 26 02:47:49 ictasstgdb01 kernel: sd 0:0:0:0: [sda] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Jul 26 02:47:49 ictasstgdb01 multipathd: sda: remove path (uevent)

So Linux engineer recommended customer needs to change from hardware_handler "0" to hardware_handler "1 alua" :

# cat /etc/multipath.conf
defaults {
        find_multipaths yes
        user_friendly_names yes
}
devices {
        device{
                                vendor "HP"
                                product "MSA 2040 SAN"
                                path_grouping_policy group_by_prio
                                path_selector "round-robin 0"
                                path_checker tur
                                hardware_handler "0"   -> hardware_handler "1 alua"
                                failback immediate
                                rr_weight uniform
                                rr_min_io_rq 1
                                no_path_retry 3

I tried to find document related with that but I can't.
Can we change the parameter as linux engineer said ?