Solution : https://service.sap.com/sap/support/notes/118439 (SAP Service marketplace login required)
Key words :
environment variable rfc_trace_dir correspondingly, additional key words rfcoscol, make saposcol data, os/390 system precisely, rfcoscol registers, saposcol data, os/390 system, sap gateway, transaction sm59, gateway options
Related Notes :
145316 | DB2-z/OS: Preparations for SAP Support Services |