Hi Nikitha,
if you deleted the form cube then you want same data again use reconstruction faction in Cube.
if you want delete from DSO you want same data again run the DTP then you will get data form PSA.
if you wrongly deleted form DSO and Cube using DTP filter you can retrieve again from PSA.
but don't delete the PSA data based on client requirement they will store last 2 and 3 years.
Thanks,
Phani.