You can solve replication conflicts by using the command line. Entries that have a change conflict that cannot be resolved automatically by the replication process contain the operational attribute nsds5ReplConflict as a conflict marker.
To find entries with conflicts, periodically search for entries that contain this attribute. For example, you could use the following ldapsearch command to find entries with conflicts:
$ ldapsearch -h host2 -p 1389 -D cn=admin,cn=Administrators,cn=config \ -w - -b "dc=example,dc=com" "(nsds5ReplConflict=*)"
Note that the nsds5ReplConflict attribute is indexed by default.