law: Custom Act, 1962 
  154.
  
  Correction of Clerical Errors, Etc. – 
  Clerical
  
  or arithmetical mistakes in any decision or order passed by the Central
  
  Government, the Board or any officer of customs under this Act, or errors
  
  arising therein from any accidental slip or omission may, at any time, be
  
  corrected by the Central Government, the Board or such officer of customs or
  
  the successor in office of such officer, as the case may be.