By default both SNMPv1 and v3 might be enabled in your ITA setup. If for security reasons you would like to disable SNMPv1 here is how to do it.
Login to the server's Webmin interface https://ITA server IP:10000
Go to EcoStruxure IT Advisor > Setup.
On the configuration page, look for Enable SNMP server.
Uncheck the v1 option.