SNMP Setting

SNMP Setting

hi 
i trying to configure SNMP setting on manageengine FW analyzer, but i get this note : "Only successfull devices will be saved"
manageengine do not try any connection to the host, after clicking test button the note appear ?
i use this way 
inventory\select firewall\ SNMP Setting
 another app already connect to this firewall though SNMP port.
with same configuration as i set in manageengine fw analyzer.

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