Server Configuration > Server Policies for SCM > Change Package Policies > Additional Requirements
  
Additional Requirements
A Windchill RV&S server configured exclusively for configuration management does not support change packages.
If workflows and documents, and configuration management are running on different servers, then the im.user, im.server, and im.port properties must also be set in si.properties to identify the Windchill RV&S server that is to be used. For more information, see “Source Configuration Management Properties”.