Hi,
>IcrFindTargetSystem: No system found for addr: x.x.x.x:443 url: /SAP/BC/BSP/SAP/thtmlb_styles/sap_skins/default/styling/bc/forward.gif
this trace means that the target system could not be found for request the x.x.x.x:443/SAP/BC/BSP/SAP/thtmlb_styles/sap_skins/default/styling/bc/forward.gif .
you are right. the root cause must be web dispatcher profile setting(target system configuration related).
Maybe SRCURL is case sensitive, please try to use SRCURL=/SAP/ and try again ?
if issue still occurs, please attach the complete Web Dispatcher profile and trace log.
Best regards,
Shi Feng