ITC WRONGLY TAKEN

A business has received a CGST-SGST bill for services supplied within their state, but the supplier incorrectly posted it as IGST on the GST portal. The invoice was from December 2020, and ITC was claimed based on the invoice. The recommended solution is to ask the supplier to amend the invoice in their GSTR-1 filing. If your place of business is in a different state, amending the invoice to IGST is the correct course of action.