Rate of exchange is different when Export E-invoice is raised and the shipping bill is filed

Shailesh Prabhu (Student CA IPC / IPCC) (53 Points)

03 May 2023  
Dear panel,

We raised Export E-invoice on the date when the customs rate of invoice is supposed to Rs. 80 per dollar. due to some technical issues on the customs portal, we were unable to file the shipping bill on that date, and the issue was resolved after two days when the exchange rate was changed to Rs. 81 per dollar. In the shipping bill, due to a change of rate, the invoice value was changed. Can we change the invoice with the new exchange rate in books, i.e., Rs. 81 as we raised E-invoice? as we have to match shipping bill value and GSTR 1 value in GST return. Or what treatment do we have to give in the books to match the annual turnover of books with GST.
kindly advise.