Resolution:
The TIBCO Adapter for SAP R/3 can be configured to connect to an external program by using the saprfc.ini file.

Please configure the following parameters in the saprfc.ini file:

DEST = RFCEXT
TYPE = &ltE (or R): server will be started by (or is already registered at) SAP-GW>
GWHOST = &lthost name of the SAP gateway, e.g. hs0311>
GWSERV = &ltservice name of the SAP gateway, e.g. sapgw53>
TPHOST = &lthost name of the RFC server program, e.g. hs0311>
TPNAME = &ltname of the RFC server program, e.g. /rfctest/srfcserv>

After updating the ini file, please configure a Client connection with type as saprfc.ini in the adapter configuration. Please refer to Chapter 6--&gtConfiguring the Adapter with Advanced Options: Client Connection with saprfc.ini file in the Adapter User's guide for further details.

Once the configuration is complete, please ensure that the External program is already started on the gateway before we start the adapter.

How do I make the TIBCO Adapter(TM) for SAPR/3 connect to an external (Non SAP) program registered at a SAP Gateway?