In HSN / SAC Master, GST Rates i.e. CGST, SGST, IGST, UGST are mentioned. Once HSN Master is created and approved by the approver the same can be linked/mapped to a product or service from the “Product Master”. The system will calculate GST Amount (CGST, SGST, IGST, UGST) product-wise at the time of Purchase Order, Add Invoice or Sales Invoice, based on the HSN Code mapped to that product.