How to find out about the Password Length Limit in Confirm

Product Feature: ConfirmConnect
ConfirmConnect has a password length limit - passwords with more than 10 character will not work in ConfirmConnect.

In the version of the Confirm Main System that Technical Support used for testing this case, which was 15.10c (at the time the latest version) it would not let us set more than 10 for the user in the User Security screen.
UPDATED:  September 29, 2017