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Cooperation between the public administrations is essential to provide services to citizens and safeguarding their rights. Such cooperation requires conditions that allow its fluidity, for which it is necessary that interoperability. Interoperability facilitates principles and rights of citizens; cooperation in the development and delivery of public services; as well as greater efficiency and effectiveness in the deployment and in the provision of services.

Article 3 ‘ general principles ’ Law 40 / 2015, 1 October, of Legal Regime of the public Sector (Opens in new window) includes interoperability between the principles of action of public administrations, so that these intersect with each other via electronic means that ensure interoperability and security systems and solutions adopted by each, the protection of personal data, and facilitate preferably joint delivery of services to stakeholders.
Rule 156 of law 40 / 2015 reflects the schema national of Interoperability (ENI) that “includes the set of criteria and recommendations on security, conservation and standardization of information, formats and applications that should be taken into account by public administrations for decision-making technological interoperability ”.
The ENI was established earlier article 42 of Law 11 / 2007 and materialises in the Royal Decree 4 / 2010, of January 8th, that regulates the National Schema interoperability (Opens in new window) in the field of E-government.
The technical standards for interoperability concretan detalles para facilitar los aspectos más prácticos y operativos de la interoperabilidad entre las Administraciones Públicas y con el ciudadano. Se acompañan de guías de aplicación y de otros documentos complementarios.

The ENI is the result of a coordinated by the work to date ministry of Territorial Policy and Public service. All public administrations participated in the elaboration of the ENI through the collegiate bodies with competence in the field of digital administration; and also counted with the opinion of associations of the industry of information technology and communications.

In the development of the ENI and their technical standards were taken into account the recommendations from the European Union, particularly from the European Framework of interoperability (Opens in new window) disponible a la fecha; por tanto, el ENI se ubica en el contexto europeo de políticas, actos, documentos y servicios relativos a la interoperabilidad; además, contempla la noción del enlace con los diversos instrumentos equivalentes del ámbito de la Unión Europea, sean redes de comunicaciones, componentes elementales (building blocks), o servicios para la cooperación en interoperabilidad o la reutilización.


The national Schema Interoperability has the following goals:

  • Understand the criteria and recommendations that should be taken into account by public administrations for decision-making technological interoperability and avoid discrimination citizens by reason of their choice technology. And, therefore, help create conditions for interoperability in the use of electronic media that allow citizens to and administrations the exercise of rights and duties through these means.
  • Provide the common elements to guide the performance of public administrations on interoperability, to facilitate interaction of public administrations, as well as the communication of the requirements of interoperability industry.
  • Facilitate the implementation of security policies to contribute to a more rational scenario technical and economies of scale.

Interoperability is conceived, like security, from a global perspective, so that there can be no action punctual or cyclical treatments, due to the weakness of a system is determined by its point more fragile and often this point is the coordination between individual measures appropriate but poorly assembled.

Elements of the National Schema interoperability

The main elements of the ENI are:

  • The basic principles of interoperability : interoperability as integral quality present from conception of services and systems and throughout their life cycle; the multidimensional nature of interoperability; and the approach of multilateral solutions. (Arts. 4 - 7)
  • Organisational interoperability : includes aspects related to the publication of services via the communications network of the AA.PP. ( SARA network ), with the associated conditions; the use of nodes of interoperability; and maintain inventories of administrative information. (Arts. 8 - 9).
  • Semantic interoperability: through the publication and implementation of data models of exchange, horizontal and sectoral, as well as those relating to infrastructure, services and common tools. (10)
  • Technical interoperability: a través del uso de estándares en las condiciones previstas en la normativa para garantizar la independencia en la elección, la adaptabilidad al progreso y la no discriminación de los ciudadanos por razón de su elección tecnológica. (art. 11)
  • Infrastructures and common services elements of dynamization, simplification and spread of interoperability, while facilitating connection multilateral. (Art. 12)
  • Use preferably of the communications network of public administrations españolas para comunicarse entre sí y a la que conectarán sus redes y nodos de interoperabilidad, aplicando el Routing Plan administration . SARA network provides the aforementioned Communications network. (Arts. 13 - 15)
  • Reuse: includes conditions of licensing of applications, the documentation associated and other objects of information that the AA.PP. made available to other administrations and citizens; liaison between the directories reusable applications and consultation by the AA.PP. of solutions available for free reuse; as well as publication of the code of applications. (Arts. 16 - 17)
  • Interoperability of electronic signatures and certificates: the policy of electronic signature and certificates of the General administration of the state as tool that can be used as a reference for other AA.PP.; aspects relating to the validation of certificates and electronic signatures, lists of confidence, user applications, service providers of certification and validation platforms of certificates and electronic signature. (Arts. 18 - 20)
  • The recovery and conservation of the electronic document, as a manifestation of interoperability over time, and that uniquely affects the electronic document. (Arts. 21 – 24)
  • Creates the technical standards for interoperability and the instruments for interoperability. (First Additional Provision)


The scope of the national security Scheme is established in Article 2 of laws 39 / 2015 and 40 / 2015 on the field subjective and what is stated on the public sector institutional.

Alignment to the National Schema interoperability

To adjust the ENI is of interest Audit guide ENI compliance (Opens in new window) which aims to facilitate to enable an assessment of the implementation of the measures of interoperability, noting a list of controls on the National Schema of Interoperability. Such controls are divided into three categories following the model of ENS:

  • Organizational framework referring to those controls demanding horizontal measures, such as the legal aspects of action policies or certain decisions, often referred to the governance of interoperability.
  • Operational framework referring to those controls which requires practices, procedures and actions aligned with the administration of interoperability as a whole, including the design, implementation, configuration and exploitation of interoperable systems.
  • Technical measures , que suponen requisitos concretos que permiten garantizar la interoperabilidad, incluyendo formatos, vocabularios o protocolos.

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