What actions may lead to the forfeiture of the contracting party's right to rescind the contract due to a defect or a discrepancy in the goods' specifications?

The contracting party's right to rescind the contract due to a defect or a discrepancy in the goods' specifications is forfeited if they perform any subsequent act indicating their acceptance of the goods in their current condition, such as re-taking possession of them or disposing of them in a manner that implies acceptance, even if the existence of the defect or the discrepancy in specification is proven.