121. Subject to the conditions as may be prescribed by the appropriate Government, where any of the Social Security Organisations is of the opinion that the amount of contribution, cess, interest and damages due to it, under this Code, is irrecoverable, the concerned Social Security Organisation may sanction the writing off of the said amount in such manner as may be prescribed by the appropriate Government:
Provided that in the case of Provident Fund, Pension Fund or Insurance Fund, such writing off shall be specified in the Provident Fund Scheme or Pension Scheme or Insurance Scheme, as the case may be.