Hi,
by checking our own NWBC environment I saw the following:
Line 206 returns also '2' in the NWBC case. No portal at all installed and used ever for this SRM installation.
The url (when using outbound handler) that is populated in line 825:
So check if the outbound_hdlr is active in SICF under sap/sapsrm.
Maybe also check with the developer tools in ie/firefox/chrome to see the different calls that are made.
Regards,
Robin