Using Websphere Portal With domino and some Other Ldap you can come across this error:
CWWIM4551E Change handler was not defined for repository type ‘YOURTYPE’ .at com.ibm.ws.wim.adapter.ldap.change.ChangeHandlerFactory.getChangeHandler(ChangeHandlerFactory.java:95)
To solve this go to:
<profileRoot>/config/cells/<cellName>/wim/config/wimconfig.xml
Find this parameter “supportChangeLog” relative to your ldap and set it to “none” if it doesn’t support Change Log (for example domino doesn’t).
EXAMPLE:
<config:repositories xsi:type="config:LdapRepositoryType" adapterClassName="com.ibm.ws.wim.adapter.ldap.LdapAdapter" id="YOURID" isExtIdUnique="true" supportAsyncMode="false" supportExternalName="false" supportPaging="false" supportSorting="false" supportTransactions="false" supportChangeLog="none" certificateFilter="" certificateMapMode="exactdn" ldapServerType="NDS" translateRDN="false">