1. The purchaser shall have sufficient knowledge of the subject matter of the sale; failing which, they shall have the right to seek the annulment of the contract. 2. Knowledge shall be deemed sufficient if the purchaser has seen the subject matter of the sale, or if the contract includes a description thereof and its essential attributes in a manner that allows for its identification in a way that does not lead to a dispute. 3. If the contract of sale that the purchaser has sufficient knowledge of the subject matter of the sale, their right to seek the annulment of the sale on the grounds of lack of knowledge shall lapse, unless they prove that the seller has deceived them. 4. If the purchaser receives the subject matter of the sale and has not objected thereto within a reasonable period according to custom, this shall be deemed acceptance thereof.
Interpretation and application must be checked against the official text and current version.