(37)Enhancing legal certainty for both consumers and sellers requires a clear indication of the time when the conformity of the goods should be assessed. The relevant time for assessing the conformity of the goods should be the time when the goods are delivered. This should also apply to goods which incorporate or are inter-connected with digital content or a digital service supplied through a single act of supply. However, where the digital content or digital service incorporated in or inter-connected with the goods is to be supplied continuously over a period of time, the relevant time for the purpose of establishing conformity of that digital content or digital service element should not be one specific moment in time but rather a period of time, starting from the time of delivery. For reasons of legal certainty, that period of time should be equal to the period during which the seller is liable for a lack of conformity.