1.If the subject matter of the sale has a defect that requires its return, and the purchaser has, before becoming aware of the defect, encumbered it with a right in favor of a third party that does not divest them of ownership, the purchaser may return it to the seller on account of such defect after releasing it from such right, provided that the subject matter of the sale has not changed during this period. 2. If the purchaser encumbers the subject matter of the sale with a right in favor of a third party after becoming aware of the defect, their right to return it for that defect shall be forfeited. If the subject matter of the sale has changed, it shall be governed by the rules applicable to changes occurring to a subject matter of the sale affected by a pre-existing defect.
Interpretation and application must be checked against the official text and current version.