Definition: Registration Service ABB is an Application Service that enables users to sign-up for a service, application or platform through unique personal identification data. Source: eIDAS - REGULATION (EU) No 910/2014 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 23 July 2014 on electronic identification and trust services for electronic transactions in the internal market and repealing Directive 1999/93/EC. Source reference: http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=uriserv%3AOJ.L_.2014.257.01.0073.01.ENG Example: The following implementation is an example on how this specific Architecture Building Block (ABB) can be instantiated as a Solution Building Block (SBB): BE:Trusted - BE:Trusted list including information related to the qualified trust service providers which are supervised by the issuing Member State, together with information related to the qualified trust services provided by them, in accordance with the relevant provisions laid down in Regulation (EU) No 910/2014 of the European Parliament and of the Council of 23 July 2014 on electronic identification and trust services for electronic transactions in the internal market. https://tsl.belgium.be/archive/TSL-BE-2016-T3_vi5_sn27%20SPF%20Economie_signed.pdf IoP Dimension: Behavioral IoP LOST view: Technical view - Infrastructure Interoperability saliency: The Registration Service ABB  is salient for technical interoperability because it provides the functionalities of the discovery of essential information about accredited service providers. Identifier: http://data.europa.eu/dr8/RegistrationApplicationService eira:ID: ABB145 ABB name: eira:RegistrationApplicationService EIRA concept: eira:ArchitectureBuildingBlock Last modification: 2022-20-01