@saikrishnanaidupasyavula , before you go off running to amend your return and exclude the rental income section ( Schedule-E), please consider that once IRS has asked for documentation to prove your original filed return, the enquiry is unlikely to be quenched easily. So I would very strongly suggest that (a) seek the help / guidance of a tax professional OR (b) at least tell us the actual situation (-- where the rental activity is , how long has it been going on, etc. etc. ) either here or by PM. Surely one of us can help you resolve the issue.
Namaskar ji
pk