Wrongly paid CGST & SGST instead of IGST

This discussion addresses a common GST error where CGST and SGST were paid on an interstate sale instead of IGST. The user amended their GSTR-1 to reflect the interstate nature of the sale, resulting in negative CGST/SGST figures. The core query is whether to claim a refund for the wrongly paid CGST/SGST or adjust it within the GSTR-3B, considering the current zero balances in cash and CGST/SGST credit ledgers.