Solution : https://service.sap.com/sap/support/notes/939473 (SAP Service marketplace login required)
Key words :
relevant application servers, qrfc outbound communications, qrfc inbound communications, calls transactions sm58, individual logical units, outbound qrfc debugging, inbound qrfc debugging, outbound logical units, trfc/qrfc scheduler, trfc/qrfc debugging
Related Notes :
999004 | Deactivating user switch with tRFC/qRFC debugger |
931129 | Deactivating the command field during RFC debugging |