We want to enable Delta pull mechanism as the help says: http://help.sap.com/saphelp_nw70/helpdata/en/eb/101fa0a53244deb955f6f91929e400/frameset.htm
The help says there is a default uwl_service user in portal, and will generate a uwl_service in abap side. But our scenario is our portal use abap as ume datasource. So there would be to uwl_service user in UME, would that be a problem? As concerning of this problem, I have deleted the uwl_service user in portal, The system is reporting a warning in log-viewer. And the Delta Pull Mechanism is not working, any suggestions?