Clarification regarding date of entry of export invoice

@ Mayank

                Dear, in this case, time of supply is 30th April only. Hence, you are required to report the invoice in GSTR-1 for the month of April. Further, I would like to inform that in table 6A of GSTR-1, airway number is not required to be mentioned but only Shipping Bill no and date is required that too it is optional only. But when you apply for refund, EGM is mandatory in statement-3

Sale in books is to be booked as per accounting standards. But this mostly pose a problem at year end.