Form filling, which is to be understood as a voluntary action, involves the acquisition of the personal data of the user. Only the fields indicated as mandatory are necessary for the provision of the expected service: failure to provide such data will imply the impossibility to execute the service. You declare that you have read and accepted the terms relating to the processing of data, which are included in the information document prepared according to sect. 13 of the GDPR 679/2016: