Short answer
A Credit Note is issued by the supplier to reduce the taxable value or tax charged on an invoice (e.g., for returned goods, defects, or agreed discounts), while a Debit Note is issued by the buyer or supplier to increase invoice value (e.g., for short-billing corrections).
Managing returns and defect allowances in Surat, Ahmedabad, and Mumbai wholesale trade requires correct GST documentation:
Tell us what you're looking for and we'll point you to the right market or supplier.