Section 16(4) under GST

Dear Collegues, Good Afternoon As my client is receiving following mail from GSTIN : Advisory Regarding inadmissible credit availed in violation of provisions of Section 16(4) As you are aware, in terms of provisions of Section 16(4) of the CGST Act, 2017 any of the registered persons filing their GSTR-3B return in respect of the last two financial years (July 2017-March 2018 and 2018-19) after 30.04.2019 and 20.10.2019 respectively, could not have availed any credit on invoices or a debit note pertaining to the relevant financial year except in respect of IGST paid on import of goods by such registered persons. Accordingly, any credit availed in violation of provisions of Section 16(4) is inadmissible. 2. Records indicate that you have filed your GSTR-3B return for Nov-2018 after the said due dates in which you have availed credit of Rs.29352.18 which is inadmissible under Section 16(4) of the CGST Act, 2017. 3. You are advised to deposit the amount equivalent to tax paid using such inadmissible credit through FORM DRC-03 with applicable interest. 4. In case the opportunity for voluntary compliance as suggested is not availed, appropriate action for recovery of tax paid using such inadmissible credit with interest and imposition of penalty shall be initiated as per the law. Please advice me in this regard. Thank You.