HSN CODE COMPULSORY OR NOT from new notification w.e.f April 2021

I have a business below 2 crores, so i want to know hsn code compulsory or not in GSTR1 or what is rules, please give me a briefly clarification about that. Thanks in advance

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Quick Summary
This discussion clarifies the mandatory nature of HSN codes in GSTR1 filings following the April 2021 notification. For businesses with turnover up to ₹5 crore, HSN codes are mandatory for B2B invoices (4 digits) and B2C invoices (2 digits). Businesses with turnover exceeding ₹5 crore must use 6-digit HSN codes for all invoices.

HSN summary mandatory in GSTR-1

If the turnover is more than 5 crore - 6 digit hsn mandatory
if the turnover upto 5 crore - B2B invoice 4 digit hsn mandatory , B2C invoice 2 digit hsn mandatory

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