Article 339. The contract of pledge, its form and registration.
1. The pledge agreement must indicate the subject of the pledge and its assessment, the substance, the amount and the period of performance of the obligation secured by the pledge. It should also indicate which of the parties has the mortgaged property. 2. The pledge agreement must be concluded in writing. An agreement on the pledge of movable property or rights to property to secure obligations under the agreement, which must be notarized, is subject to notarization. 3. The mortgage agreement must be registered in the manner prescribed for the registration of transactions with the relevant property. 4. Non-observance of the rules contained in paragraphs 2 and 3 of this article shall entail the invalidity of the pledge agreement.
References to other articles of chapter 23. Ensuring the fulfillment of obligations: