We have documented and posted all the error messages for RFID, SSO, EDI and WCF for the event log. See the links below: %u00b7 RFID: http://msdn2.microsoft.com/en-us/library/bb968047.aspx %u00b7 SSO: http://msdn2.microsoft.com/en-us/library/bb899027.aspx %u00b7 EDI: http://msdn2.microsoft.com/en-us/library/bb968069.aspx %u00b7 WCF: http://msdn2.microsoft.com/en-us/library/bb899069.aspx If there are more areas we need to document, please send us the feedback. Regards, Marjan