Modes of recovery of monetary penalty: procedures for enforcing penalties against debtors, joint holders, heirs and transferees. The recovery officer may require payment from the defaulting enterprise or person, any enterprise holding money for them, or legal heirs; joint holders' and heirs' shares are presumed equal until disproved and heirs' liability is limited to the estate's capacity. Addressees must comply with recovery certificates without production of deposit instruments, and claims arising after the demand notice are void. An addressee may object on oath that the sum is not due or that they hold no funds, notifying the Commission. Transfers made during pendency are void against penalty claims unless for adequate consideration without notice or with prior Commission permission.