If LDAP User and Group types are not properly mapped, Workgroup Manager may issue alert messages that contain "error -14130" or "error -14136".
Symptom 
You see one of these alert messages when attempting to connect to an LDAP server, or a similar message:
    
    Solution 
    
    Using the Directory Access application, map the User and Group Types and Attributes to the proper Attributes on the LDAP server.  Figure 1 shows a proper mapping for a user's "UniqueID" mapped to the "uidNumber" of Open Directory server. The mapped value depends on the version of LDAP server. Apple's Open Directory server is based on and uses OpenLDAP.
    
    
    
    
    Figure 1 
    
    For more information on LDAP and Directory Access, please see the Mac OS X Server Admin Guide.