Gst challan - wrongly paid igst instead of sgst

SSG (1936 Points)

21 September 2017  

GST challan has been paid through e-payment on 20th Sep. 2017 for GSTR-3B of Aug. 2017. The correct tax head were CGST and SGST but SGST was wrongly paid into IGST in challan. What is the way to correct it? Thus GSTR-3B for Aug. 2017 is still pending to be filed. Please advise.