Can somebody receive notice from income tax dept after itr successful processing.?

Suppose Some one filled ITR for AY 18-19, and his ITR got processed successfully and refund sent to banker, is there any chance or possibilty he will recieve any notice from Income Tax dept in near future for FY 2017-18, ? Like Notice related to bank Transactions, or income Declaration relatedetc, For which ITR already processed for that year.

What are the possible situations  for recieving Income tax dept Notice even after Successfull Processing Of ITR for same year..?