Revision of return after notice cum demand u/s 143(1)

priyatambika ( ca final student) (323 Points)

18 December 2019  
after receiving the notice, i am revising the return using acknowledgment no i had recd when i last revised the return(it is pending e-verification), but its showing wrong ack no... should i enter the ack no. of original return (it is processed) or notice no. u/s 143(1)..?