OpenLDAP synchronization Problem

I have following user, that is created in OpenLDAP, I want to synchronize this user to Mendix, using LDAP Synchronization module. after configuration, I find I can import this user, but I can’t import the user group. therefore I can’t map user group to Mendix roles,  What is the problem?  Please help on it.  # zliu, Users, dn: uid=zliu,ou=Users,dc=example,dc=org structuralObjectClass: account entryUUID: 0ae25ce0-0118-103a-9bf2-47da58f41326 creatorsName: cn=admin,dc=example,dc=org createTimestamp: 20200323060529Z entryCSN: 20200323060529.766795Z#000000#000#000000 modifyTimestamp: 20200323060529Z memberOf: cn=admin,ou=Groups,dc=example,dc=org memberOf: cn=g_mendix,ou=Groups,dc=example,dc=org modifiersName: cn=admin,dc=example,dc=org entryDN: uid=zliu,ou=Users,dc=example,dc=org subschemaSubentry: cn=Subschema hasSubordinates: FALSE   When I tested the configuration I can retrieve user, but the user doesn’t have memberOf attribute, since memberOf is an operational attribution. 
1 answers

MS AD works with LDAP Synchronization Module, but OpenLDAP not.