The formal notice provided for in V of article L. 211-20 shall contain the following information, failing which it shall be null and void:
1° If payment is not made, the creditor may realise the pledge within eight days or on expiry of any other period previously agreed with the pledgor;
2° The pledgor may, until the expiry of the aforementioned period, inform the account keeper or the manager of the computerised identification process of the order in which the sums or financial securities are to be allocated in full ownership or sold, at the creditor’s discretion.