Netweaver Technical Consultant has to perform below troubleshooting steps :-

•      Run SLDCHECK in PI Server and make sure everything should be green.

            If anything coming red here then need to be check below RFC’s

              INTEGRATION_DIRECTORY_HMI

                   LCRSAPRFC

                   SAPSLDAPI

•      Clear the Server Cache as below through PIDIRUSER User.

                                      http://xxxxxxx:50100/CPACache/refresh?mode=full

     Check now whether messages are flowing or not, if not please follow below procedure

•     Check SXI_CACHE Transaction for correct Server cache

            here 2 things need to be checked :-

                          1) Server name

                           2)Port

           if anything is incorrect then need to correct it , procedure

                           1) Delete the entry

                           2) Run RZ70 to refresh to/from SLD

                               3)Check the entry agin SXI_CACHE , it will reflect correct otherwise check in SLD Server.

             I hope above checks will help to do troubleshooting ….