A LIEN is a legal claim against a debtor's property, usually in the form of a security interest. It is used to secure payment of a debt or other obligation. A LIEN can be placed on real estate, personal property, or other assets owned by the debtor. The LIEN gives the creditor the right to take possession of the asset if the debt is not paid. The LIEN also serves as a warning to potential buyers that the asset is encumbered and cannot be sold without the consent of the creditor.