E invoice guide

Anshuman Basu (account -GST) (1546 Points)

23 June 2021  
Dear Sir 

We are having a turnover of more than Rs 50. But due to oversight we have not generated e invoice from 1 April, We will started it from 1 June. How can we generate E invoice of April and may month now . 

we already filled GSTR 1 for the month of April and May 21.

 Kindly guide what we can do now