Invoice under GST for petty sales

GS (5 Points)

22 May 2021  
Case - We are going to register newly partnership firm under GST. My business is provision store.
Since, in this business the billing start from petty amount 50/- and more and transaction may be more than hundred.

My question is
1. Are we need to issue GST invoice to all petty customers ? or
2. we issue a single GST invoice in cash sales at end of day with GST amount collectively for all petty sales made during the day