There are lots of dump called DYNPRO_SEND_IN_BACKGROUND in my prd system. And it lead to gate automatic Posting failed. The short text of the dump is Screen output without connection to user. The dump was issued when the external system sent the posting data to the sap system. The user of the interface is HBPM_EPG. And the user type is system. I do not know if there is someting with the user type. Do I need to change the user type to communications data. Can anybody help me?