Hi Siddappa
Firstly I think you can use the SRM reports for Purchase orders created only via SRM system in
the classic scenario .
Try these steps :
1. Check the user who is executing the reports has the strategic or operational purchase roles
2. Try to execute the report from backend using SQ01 by selecting the user group as shown below and try to excute from backend .It should show you the list ideally .. which means you only have to configure it on Portal .
3.However If this does not work you can take help from an ABAPer to debug or raise to SAP .
4. In case of portal usage it is necessary to set link between LPD_CUST role and iView. This customizing is available on the Content Administration tab:
Refer screenshots and links below for your reference.
http://wiki.scn.sap.com/wiki/display/SRM/SRM+Reports
http://wiki.scn.sap.com/wiki/display/SRM/SRM+Reports+Customizing
Regards
Vinita