WebDynpro URL failing?

Hi,
I'm working on ESS/MSS implementation. We got some workflows tasks that are sitting in UWL task list when employee submitted leave request. Manager need to approve it.
As a manager role, when I click on LeaveReqeust task from UWL inbox, portal tries to open the leave request in WebDynpro but fails with error saying no service is available. The new opened window has this message
Service cannot be reached
What has happened?
URL http://<hostname>:8010/webdynpro/dispatcher/sap.com/ess~lea/LeaveRequestApprover call was terminated because the corresponding service is not available.
The interesting thing is, the URL hostname it's using is not the portal hostname that is configured in SAP_WebDynpro_XSS system object WebAS connection details. If I grab the above url and change the hostname and port to my portal hostname and port 50000, paste in new IE browser it works successfully (Leave request is opening).
Where is this hostname and port number in the above URL coming from? My SAP_WebDynpro_XSS system object connection test are failing with following message.
The Web AS ping service http://<Portal hostname>:50000/sap/bc/ping was not pinged successfully. If the ping service is not activated on the Web AS, you can try to call the ping service manually.
An HTTP/S connection to http://<Portal hostname>:50000/webdynpro/dispatcher/ was not obtained successfully; this might be due to a closed port on the Firewall.
Thanks
Praveen

I resolved this issue, it's got to do with UWL configuration. Please refer to this thread for resolution
Leave request fails to open?
I still have SAP_WebDynPro_XSS system object connection tests are failing. Shall post back if there is any other issue due to this.
Thanks
Praveen.

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