title: Create new partition with Apache DS
body: <p>I am trying to create complex partitition with Apache DS</p>
  
  <pre><code>        Dn dnApache = new Dn("ou=test,dc=Apache,dc=org");
          Entry entryApache = service.newEntry(dnApache);
          entryApache.add("objectClass", "top", "domain", "extensibleObject");
          entryApache.add("dc", "Apache");
          service.getAdminSession().add(entryApache);
  </code></pre>
  
  <p>It works good and I have no problems. But when I tried to create more complex partition, like this:</p>
  
  <pre><code>        Dn dnApache = new Dn("ou=test,dc=Apache,dc=org");
          Entry entryApache = service.newEntry(dnApache);
          entryApache.add("objectClass", "top", "domain", "extensibleObject");
          entryApache.add("dc", "Apache");
          service.getAdminSession().add(entryApache);
  
          Dn serviceDN = new Dn("ou=service,ou=test,dc=Apache,dc=org");
          Entry serviceEntry = service.newEntry(serviceDN);
          entryApache.add("objectClass", "top",  "organizationalUnit");
          entryApache.add("dc", "Service");
          service.getAdminSession().add(serviceEntry);
  </code></pre>
  
  <p>I have an exception like this:</p>
  
  <pre><code>org.apache.directory.api.ldap.model.exception.LdapSchemaViolationException: ERR_60 Entry ou=service,ou=test,dc=Apache,dc=org does not contain a STRUCTURAL ObjectClass
      at org.apache.directory.server.core.schema.SchemaInterceptor.assertObjectClasses(SchemaInterceptor.java:1493)
      at org.apache.directory.server.core.schema.SchemaInterceptor.check(SchemaInterceptor.java:951)
      at org.apache.directory.server.core.schema.SchemaInterceptor.add(SchemaInterceptor.java:1045)
      at org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:416)
      at org.apache.directory.server.core.exception.ExceptionInterceptor.add(ExceptionInterceptor.java:188)
      at org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:416)
      at org.apache.directory.server.core.admin.AdministrativePointInterceptor.add(AdministrativePointInterceptor.java:1201)
      at org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:416)
      at org.apache.directory.server.core.authz.AciAuthorizationInterceptor.add(AciAuthorizationInterceptor.java:516)
      at org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:416)
      at org.apache.directory.server.core.referral.ReferralInterceptor.add(ReferralInterceptor.java:249)
      at org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:416)
      at org.apache.directory.server.core.authn.AuthenticationInterceptor.add(AuthenticationInterceptor.java:335)
      at org.apache.directory.server.core.api.interceptor.BaseInterceptor.next(BaseInterceptor.java:416)
      at org.apache.directory.server.core.normalization.NormalizationInterceptor.add(NormalizationInterceptor.java:127)
      at org.apache.directory.server.core.DefaultOperationManager.add(DefaultOperationManager.java:394)
      at org.apache.directory.server.core.shared.DefaultCoreSession.add(DefaultCoreSession.java:193)
      at org.apache.directory.server.core.shared.DefaultCoreSession.add(DefaultCoreSession.java:170)
      at EmbeddedADSVerTrunk.initDirectoryService(EmbeddedADSVerTrunk.java:218)
      at EmbeddedADSVerTrunk.&lt;init&gt;(EmbeddedADSVerTrunk.java:234)
      at EmbeddedADSVerTrunk.main(EmbeddedADSVerTrunk.java:264)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:606)
      at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
  </code></pre>
  
  <p>Can you please help me?</p>
  
  <pre><code>Exception in this line:  service.getAdminSession().add(serviceEntry);
  </code></pre>