Solution : https://service.sap.com/sap/support/notes/376078 (SAP Service marketplace login required)
Key words :
additional trace option, environment variable depends, environment variable, trace file, trace switches, trace level, cpic interface, analyze errors, terms cpicsideinfocpic_tracesm59cpictlib, libcpictlibtrace_rawcpic_trace_raw reason
Related Notes :
516073 | Timeout during connection setup |
516027 | Gateway error due to terminated TCP connection |
47682 | Activating the CPIC trace |