2075799 - ERROR: Error (Msg EGW 748 not found) [VIDEO]

When executing RFC Connection (Type T) on SM59 transaction, following error appears:

Error when opening an RFC connection
ERROR: Error (Msg EGW                  748 not found)
LOCATION: SAP-Server <server name> on host <hostname> (wp <nr>)
COMPONENT: CPIC
RETURN CODE: 748

Work process trace file (dev_w<nr>) shows:

     *** ERROR => ThIGetT100: msg EGW                  748 not found [thxxmode.c   5910]
     ***LOG R37=> ThIGetT100, sapt100 ( 748) [thxxmode.c   5919]
     * CMRC=19 DATA=0 STATUS=0 SAPRC=748 ThSAPOCMINIT
     RFC> ABAP Programm: xxxxxx (Transaction: SM59)
     RFC> User: <user name>  (Client: <cln>)
     RFC> Destination: <RFC_Name> (handle: x, …
     *** ERROR => ThIGetT100: msg EGW                  748 not found [thxxmode.c   5910]
     ***LOG R37=> ThIGetT100, sapt100 ( 748) [thxxmode.c   5919]
     *** ERROR => RFC ======> CPIC-CALL: 'ThSAPOCMINIT' : cmRc=19 thRc=748
     Error (Msg EGW                  748 not found)
     *** ERROR => RFC Error RFCIO_ERROR_SYSERROR in abrfcpic.c : 1730
     CPIC-CALL: 'ThSAPOCMINIT' : cmRc=19 thRc=748
     Error (Msg EGW                  748 not found)
     DEST =<RFC_Name>
     HOST =%%RFCSERVER%%
     PROG = <Program ID>
     GWHOST =<gw_hostname>
     GWSERV =sapgw<nr>

Instead of the "748 not found" text, the error details can also be:

CPIC-CALL: 'ThSAPOCMINIT', communication rc: CM_PARAMETER_ERROR (cmRc=19), taskhandler rc: TP_REG_ACCESS_DENIED (thRc=748)
Access to registered server is not permitted

In the Syslog (transaction SM21), below error can be seen:
   “R3 7 Error in T100, MSG: 748”

This applies for destinations that are configured with "Registered Server Program" as the "Activation type" on the "Technical Settings" tab page in transaction SM59.

RFC “Connection Test” may work from one server but it does not work from other/s.

EGW748, 748, EGW 748 not found, return code 748, TP_REG_ACCESS_DENIED, reginfo, gw/reg_info, Access to registered server denied,
SLD, SLD_UC, SLD_NUC, RZ70, error code 748, solman, rz70 , KBA , gscspain_video , BC-CST-GW , Gateway/CPIC , SV-SMG-INS-CFG , Setup and Configuration of the Solution Manager system , BC-CCM-SLD-ABA , System Landscape Directory ABAP Connectivity , BC-MID-RFC , RFC , BC-XI-CON , Connectivity , How To