Hi Sajoy
As suggested by others, you cant get that deleted request back, but you do have some alternative to load the data. First let me try to explain your problem again. Please correct me if am wrong
Your data from source loads into a DSO which is a export datasource of another DSO(DSO2).
Somehow you have deleted the PSA request of the export datasource and you want to load it again.
Follow the below steps if the above is your issue
1) Delete the latest request from DSO1
2) Reload the same from PSA (this PSA is direct from source) using the option update with scheduler
3) Activate the request
4) Trigger the second level info-package (DSO1 to DSO2)
It should work. Please be specific in explaining your issues which will be easier for us to understand and help you faster. Its waste of time from both sides.
If this is not your issue, please explain in more detailed way
Regards
Karthik