(5) Where, in the case of any goods which are not chargeable with any duty, any entry made under subsection (1) is incorrect, the importer shall, within 10 days after the delivery of the entry or such longer period as the Comptroller may in any case permit, be allowed to deliver to the Comptroller a full and accurate account of the goods and if the Comptroller is satisfied that the error was not made knowingly or recklessly, then despite any other provision of any customs enactment, the person making the entry does not commit an offence and the goods which were the subject of the error are not liable to forfeiture.