Solution : https://service.sap.com/sap/support/notes/452443 (SAP Service marketplace login required)
Key words :
rfc-specific parametersdebugger nuse sap gui yinvisible nstart sap gui yrfc trace ysap logon dataclient <, sap gui test datatransaction/function ffunction module stfc_sapguias, connection parametersr/3 3sap logon yid, sap gui presentation 1 cd, small sap gui window, sap gui congratulations, rfc trace files, enable secure network communication, windows\win32\sapgui\bin, bw front-end applications
Related Notes :
| 308929 | Activating trace for SAP Logon Control |
| 142705 | Files for the BW support |