The mapping between radius and ldap attributes is in raddb/ldap.attrmap. You
should edit the file and add any new mapping which you need. The schema files
-is located in doc/RADIUS-LDAPv3.schema. Before adding any radius attributes
+is located in doc/examples/openldap.schema. Before adding any radius attributes
the ldap server schema should be updated. All ldap entries containing radius
attributes should contain at least "objectclass: radiusprofile"