51 limited ability to adapt applications to technology changes (mobile device support, system interfaces, etc.). The well-considered prioritisation of electronic channel and development of self-service solution will provide opportunity to institutions (and to the country as a whole) to reduce the resources related to service supply, allowing to switch them to improvement of basic functions. More effective and accessible governance is necessary; therefore, electronic communication and electronic content is not just an alternative to paper solutions – they must be replaced. Services created for public administration and businesses should be primary targeted only to the electronic way of reception, but for the services anticipated for population, it should become as priority channel of service provision. Given that the digitalisation of cultural heritage and content available to the public should be seen in the broader context as the collaboration between public administration and inhabitants, as well as it has been determined as the UNESCO priority and its role has been emphasised in the NDP 2020, it has been proposed as a separate priority within this action direction. Due to similar reasons stimulation of Latvian language usage distribution has been separately highlighted, as well as the health sector, which results from the priorities and action directions of the NDP 2020 and other policy planning documents39. Further action will be planned in the following areas: * opening of public administration data and transaction services to other users; * shared platforms and service development for provision of public services; * implementation of official e-mail addresses to inhabitants and entrepreneurs; * digitalisation of public services; * automated issue and acceptance of electronic invoices; * digitisation and accessibility of cultural heritage; * stimulation of Latvian language usage distribution in the digital environment; * e-health solutions for efficient, safe and patient-oriented health care. 5.4.1 Opening of Public Administration Data and Transaction Services to Other Users In order to ensure the valuable utilisation of data potential owned by the State and sustainability of solutions, principle of openness has been introduced as a key principle in the 2014-2020 development planning period – the availability of content and interfaces for both public administration users and other users. In 2014-2020 development planning period, it is necessary to change the approach regarding the development of public administration solutions and services. Taking into account the experience of the private sector, where services of large companies serve as a platform for the creation of countless by-products (such as applications). Public administration investment in ICT solutions would be more sustainable and could develop additional potential, if they will create preconditions and possibilities that the final solutions could also be developed by third parties (services, data analytical solutions, etc.), exploiting data and standardised interfaces owned by the state. 39 Action Direction of NDP 2020: Human cooperation, culture and civil participation as the home base for Latvia, Action Direction of NDP 2020: Healthy and capable person, Public Health Guidelines 2011-2017 information_society_development_guidelines_2014_2020.docx; Information Society Development Guidelines 2014-2020