(1) If the acquirer of a plot of land assumes a debt of the alienor for which there is a mortgage on the land, by contract with the latter, the obligee may only ratify the assumption of the debt if the alienor notifies the obligee of it. If six months have passed since receipt of the notice, the ratification is deemed to have been granted unless the obligee has previously refused it to the alienor; the provision of section 415 (2) sentence 2 does not apply.
(2) Notice by the alienor may only be made when the acquirer has been entered in the Land Register as owner. It must be made in writing and must include the statement that the transferee takes the place of the previous obligor unless the obligee declares their refusal within that period of six months.
(3) On demand by the acquirer, the alienor is to notify the obligee of the assumption of debt. As soon as the grant or refusal of the ratification is definite, the alienor is to inform the acquirer.