One of our Customer has raised DEBIT NOTE for part consignment of Goods returned by them on 12th September 2017. This consignment was sold to them in August 2017 i.e. Under GST Rules.
Please advise if DEBIT NOTE / CREDIT NOTE is acceptable under GST Rules in case of Goods Returned Or Sales Invoice is to be issued ?
Secondly What if Material sold before 01.07.2017 is Returned now ?