http://blogs.msdn.com/b/duetsupport/archive/2011/10/03/bdc-connectivity-errors-in-sharepoint-developer-if-you-do-not-have-the-correct-root-certificate-trusted.aspxIn SharePoint Designer when creating a new external content type to a webservice on SAP using the following steps: Navigate to the external content type section->new content type-> External system "click here to discover external data sourcesen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)