Sale bills missed in GSTR 1 of 2017-18

Prem Kewalramani (292 Points)

29 March 2019  
If some B2B sale bills of 2017-18 not taken in GSTR 1 how they can be shown now..Whether these are to be shown in GSTR 1 of March 2019 or any amendment in old GSTR 1...Please...