Query related to form 10e

Hi i have a query because the 10E form i filed in this AY 2018-19 has been rejected by IT dept. My query is i did not understand why it has been rejected. I have filled 10E in AY 2017-18 and AY 2018-19 both and last year it was accepted but this year it is rejected. Now my query is 1. Do i have to enter details of FY 2016-17 and FY 2017-18 both in the 10E form of AY 2018-19 or only the details of FY 2017-18? (I filled only details of FY 2017-18)   Please help me out in understanding the reason of rejection. Thanks.