Hi Lutz, Thanks for your inputs. But with a further close analysis, we performed the below steps.
1. Switched off the Web Dispatcher
2. Accessed the Portal with Proxy URL.
so our systems is Apache Proxy -> SAP Portal.
So we observed that even when we are accessing with the Proxy, we are getting the error and in this case, the Load Balancer is not involved.
We also observed that the error is showing as SiteMinder Login module authentication failure and exactly at that point we are getting 403 Access Denied error.
We were able to access all the other applications except UWL.
So we are suspecting that there is an issue with SiteMinder Login Module.
Has anyone faced this kind of an issue with SiteMinder before? Can anyone throw some light on this issue..
Thanks,
Bhavya