We inform you that it is legally mandatory to establish a period of 7 calendar days for all our clients to open cases related to transportation incidents, whether they are damages or losses, as stated in the BOE, in article 60 - Reservations: https://www.boe.es/eli/es/l/2009/11/11/15
"The recipient must express their reservations in writing to the carrier or their assistants, generally describing the loss or damage at the time of delivery. In the case of non-manifest damages and losses, the reservations must be made within the following seven calendar days after delivery."