hp uCMDB LDAP Authentication - OrganizationalUnit

Good day



We are seeing strange behaviour when trying to setup AD Authentication into uCMDB


When we use Groups we can then go to LDAP Mapping and can view each group and its users



But we want to use Organizational Units as Groups , so we changed the mapping to point to OrganizationalUnit instead of Groups, and in LDAP Mapping we can see the Groups, however when clicking on view users, it does not display anything


Is there any limitation to using OrganizationalUnit instead of Groups