Reporting of missed sales return in GSTR-1

Kamal Jain (Student CA Final ) (111 Points)

11 October 2018  
We have received goods from our unregistered customer in August, 2018 but it could not be reported in GSTR-1. So now we want to show them in September month return. But we do not have any sales in September month. So how we report in GSTR-1 for September month?