Gst reated query

Ajnas (Student) (844 Points)

13 January 2021  
1.A credit note was issued in September 2020 of a product. How to show it in HSN Summary as no such product is sold in Current Month.?
2.credit notes in hsn wise summery include credit note relating to previous month sales or only include credit note relating to current month sales?
3.debit notes in hsn wise summery include debit note relating to previous month sales or only include debit note relating to current month sales?