As per Section 31 sub-section (7) of CGST Act, 2017, a person making sale on approval basis is required to issue the invoice before or at the time of supply or six months from the date of removal, whichever is earlier.
CBIC vide Notification No. 66/2020 – Central Tax dated 21.09.2020 has granted extension to taxpayers, in whose case time limit for compliance of Section 31(7) of the CGST Act, 2017 falls between the period 20th March, 2020 to 30th October, 2020 till 31st October, 2020.