If you are using ATG Self Service, that server is aware of scenarios only for external users (users of the ATG Self Service website). You configure the scenarioManager.xml file to have one Process Editor Server, which is a ATG Self Service instance:

<?xml version="1.0" encoding="ISO-8859-1" ?>
<process-manager-configuration>
 <process-editor-server>
  <server-name>ATG Self_service_host:8851</server-name>
 </process-editor-server>
</process-manager-configuration>
 
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