gstr 1 amendment 2017 -18 in gstr 1 March 19

In related fy 2017-18 amendment gstr 1 return, can be amend gstr 1 on Fy 2018-19 for the month of March 19 due date is 11.04.19 ,can we filed this gstr1 late on 30.04.19 and after due date (ex 11/04/2019) this amendment will be allowed pls reply