We need to connect XI with SRM. The scenario is SRM-XI-SUS. SRM and SUS are installed in the same box. We have created the RFC destination for XI in SRM and a RFC destination for SUS in XI. But if we create the PO from SRM system, the SAP XML is created in SRM and it is posted to XI. But from XI it is throwing the error "HTTP Destination not found". We have checked the HTTP destination in SM59 too, the connection is successful. What could be the other possibilities of this error?