Revised return u/s 139(5)

Assessee can revise ITR u/s. 139(5)  for AY 2019-20, till March 2020 even if intimation u/s. 143(1) received.

Sec 143(1) is just processing of return.It is not completion of Assessment.You can also file revised return after 143(1) processing.

If  scrutiny proceedings are completed  U/s 143(3) and if you receive order or U/s 144 it is said to be completion of assessment