Problem :- Customer is not able to sync-from-Appliance

Troubleshooting from VD :- 

Administrator@Primary-Director> request devices device PASSIVE-VRRP sync-from
result false

ssh key mismatch Error
[ok][2018-08-30 12:59:10]

To Solve we need to ssh fetch keys from the CPE:-

Administrator@Primary-Director> request devices device PASSIVE-VRRP ssh fetch-host-keys
result changed
fingerprint {
algorithm ssh-dss
value a0:88:51:44:33:40:f2:9b:81:40:30:04:07:c8:a7:0d
}
[ok][2018-08-30 13:00:17]

Verification :-

Administrator@Primary-Director> request devices device PASSIVE-VRRP sync-from          
result true
[ok][2018-08-30 13:01:16]
Administrator@Primary-Director>