Hi Tobias,
Thank you for the response.
I tried this way..
1. prepared URL and executed.
It is stopping on Selection screen with message "
No suitable purchasing documents found".
If I execute on the same displayed selection-screen, then it is giving result.
2. Removed User defined parameter values for Purc group and Purch Org.
It is giving expected result now.
Thank you.
Balaji P.