Article 14 of Ley 39/2015 establishes the right and obligation for a wide range of parties to interface electronically with government agencies in order to carry out any procedure of an administrative nature. In summary, this requirement applies to all parties, except for natural persons provided that there is no express obligation (Article 14.3) and they act as individual citizens.
In the case of notifications by government agencies to a subject required to interface electronically, Article 41 establishes the obligation that these notifications be telematic.
This form has to be used to report to the CNMC the data needed to make telematic notifications, which basically consists of a NIF for which a recognised electronic certificate has been issued.
Parties not required to communicate electronically with the CNMC, can report the means of notification by completing and submitting the standard form.