Law 39/2015
Article 16. Records .
"1. Each Administration must have a general electronic register, in which every document presented or received in any administrative body, public body or entity linked or dependent on them must be registered. It can also be noted the output of official documents addressed to other bodies or individuals [...]
The general electronic register of each Administration must function as a portal that facilitates access to the electronic registers of each body. Both the general electronic register of each Administration and the electronic registers of each body must comply with the guarantees and security measures provided for by the legislation on the protection of personal data.
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4. The documents that interested parties send to public administration bodies can be presented:
a) To the electronic register of the Administration or body to which they are addressed, as well as to the other electronic registers of any of the subjects referred to in article 2.1.
b) At post offices, as established by regulation. c) To the diplomatic representations or consular offices of Spain abroad.
d) At the registration assistance offices.
e) In any other established by the provisions in force.
The electronic records of each and every one of the administrations must be fully interoperable, so that computer compatibility and interconnection are guaranteed, as well as the electronic transmission of registration entries and documents that are presented in any of the registers."
Article 32. Extension.
"4. When a technical incident has made the normal functioning of the system or the corresponding application impossible, and until the problem is solved, the Administration can determine an extension of the unexpired terms, and must publish on its electronic headquarters both the incident technique that has become the specific extension of the unexpired term."
Article 66. Initiation requests.
"6. When the Administration, in a specific procedure, expressly establishes specific models for the presentation of requests, these are mandatory for use by those interested."