Quality at the time of receipt
If the received goods have defects (e.g., lack the agreed or reasonably expected characteristics, are unsuitable for their usual or agreed purpose, are incomplete, do not match their quantity, size, weight, or quality according to other legal, contractual, or pre-contractual parameters), they are defective, and the seller is liable.
The buyer may claim, no later than two years from receipt of the goods, free of charge repair or a reasonable discount on the price; if the defect cannot be removed without undue delay, the buyer may request a new, defect-free item or a defect-free new component.
If repair or replacement is not possible, the buyer may request a full refund based on the withdrawal from the contract.