During a fresh install of ICT 15.5 and configuring the Administration Console, an alert appears when trying to connect the LDAP and Active Directory configurations. This prevents the setup from moving forward.
The submitted data is not valid. Please correct it to contine. (An error occurred while validating the users console group. Please check if the username, password, path to the LDAP and users console group are valid.)
The alert is a generic "error" that can populate for a number of reasons. Although, there are two confirmed scenarios that would cause this to show.