SAP Note 704206 - Analyzing "Remote login" problems in SM59

Component : RFC - Network Infrastructure

Solution : https://service.sap.com/sap/support/notes/704206 (SAP Service marketplace login required)

Summary :
Failure in remote logins via SM59 can arise under various circumstances including improper user type configuration in the target system, unrecognized hosts or services, issues when using SAP routers, IP changes during runtime affecting NI buffer, missing RFC authorizations, and limitations on maximum CPIC clients. To resolve these, verify user types and system configurations in SM59, initiate proper connections considering NAT impacts, reset the NI buffer via SM51, ensure appropriate RFC authorizations are set, adjust gateway profile parameters, and refer to relevant SAP notes for detailed guidance on specific issues.

Key words :
ni buffer includes incorrect values, menu option goto --> host, gw/max_sys profile parameter, buffer --> reset --> total system, s_rfc rfc authorization object, abap runtime error, log s19=> r3isendconnreq, tcp/ip reason, cpic clients reached 7, create trace files

Related Notes :

807895Incorrect logon data after remote login with SM59
797056Connection to other system could not be established
555162Asynchronous RFCs with a dialog using a SAP router
189077Remote login in SM59 does not work