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1. You created an RFC connection to the cFolders system as follows: Tools → Administration → Administration → Network → RFC Destinations (transaction SM59). You tested the connection.
If you do not want the back-end integration user to have to explicitly log on to the cFolders system, you can set up a “trusted system” connection. For more information, see SAP Note 128447 and Integration with Back-End Systems (cFolders) in the SAP cProject Suite 4.00 Security Guide on SAP Service Marketplace at service.sap.com/instguides → Installation & Upgrade Guides → mySAP Business Suite Solutions → mySAP PLM → using cProject Suite 4.00.
2. You made the required settings in Customizing for cFolders back-end integration using transaction CFC01. Here, you need the name of the RFC connection you created in the first step.
3. You deselected the iPPE Node and iPPE Variant checkboxes in cFolders Administration.