We could see that AFM hostname is captured as external ip instead of end-user client IP in MFP. Hence, IncreaseAuth is returned whenever the same user was handled by different AFM servers.
Release : 8.2.1
Component : RiskMinder(Arcot RiskFort)
To exclude external ip address in device identification process, Engineering team has recommended to change elem_weightage value of ExternalIP to 0 in ARRFBUCKETELEMENTCONFIG table.