Ansible Tower - LDAP

Good Day,

I am trying to connect Tower to our LDAP Server (AD). I have captured tcpdumps and can see it is connecting; searching and finding records but the actual authentication is not occurring. Can anyone assist in this matter ?

I have the following populated, apart for the normal connection details :

LDAP USER SEARCH
LDAP GROUP SEARCH
LDAP USER ATTRIBUTE MAP

I have tried the following for LDAP GROUP TYPE :

MemberDNGroupType
Active DirectoryGroupType

Regards