 Acquisitive prescription describes the acquisition of property, or rights of ownership, and therefore falls outside the scope of contract law.Contractual rights and duties are generally transmissible on death, although not in the case of a "delectus personae" or an express or tacit agreement to the contrary, in which case resolution of the contract is left to the executor of the deceased's estate.The contracting parties’ main objective during contract negotiation should be to reach a consensus regarding the exact object of their agreement on the best commercial terms and conditions.