Demand for recovery of penalty requires deposit within specified period via prescribed challan; interest and recovery measures follow. The Form I demand notice requires the addressee to deposit the penalty within thirty days of receipt by payment through Challan in favour of the Pay and Accounts Officer-Ministry of Corporate Affairs to the specified account head. If the penalty is not deposited within that period, interest at 1.5% per month or part of a month shall run from the day after expiry until payment, and the Commission may take steps to recover the sum and initiate actions for non compliance of its orders.