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<h2>Once-Only Technical System Projectathon #2 Insights</h2>
<p>The<p>On 14-16 June 2023 Projectathon will be based on, the <a target="_blank" href="https://ec.europa.eu/digital-building-blocks/sites/display/TDD/OOTS+Technical+Design+Documents+-+Q1+2023">Q1 2023 release</a> of theOOTS/Projectathon2" target="_blank">second Once-Only Technical DesignSystem DocumentsProjectathon</a> asbrought amendedtogether withall any27 correctionsEU fromMember theStates <a target="_blank" href="https://ec.europa.eu/digital-building-blocks/sites/display/TDD/ERRATA+for+Q1+2023+release">errata list</a>.</p>
<p>For this event, the test cases prepared for the April 2023 Projectathon are largely taken over as it still reflects the main plans of the Member States. It consists of the following elements:</p>
<ul>
<li>5 Evidence Exchange scenarios without preview,</li>
<li>5 Evidence Exchange scenarios with preview,</li>
<li>2 Maintenance flow scenarios (Common Service updates).</li>
</ul>
<p>A high-level overview and summary of test cases is available to the testing and deployment sub-group (restricted to relevant users on the wiki)for a marathon of peer-to-peer interoperability testing. This was the second of three such events planned to take place in 2023. Projectathons facilitate crucial development, testing and eventual deployment of national Once-Only Technical System implementations.</p>
<p>Neutral experts, acting as monitors, supervised and verified the tests carried out over the three days. The Once-Only Technical System Projectathons are not pass/fail type examinations. Rather, they are a collaborative exercise in understanding technical and operational issues and working together to solve them.</p>
<p>The fullJune testProjectathon caseswas arean accessibleexcellent viaopportunity thefor Gazelle platform (restrictednational implementers to userslearn, thathelp registeredeach asother participantsand to the Projectathon).</p>
<p>In addition, the June Projectathon will allow for some more advanced scenarios to be discussed in exploration sessions or in a restricted test session between those teams that are ready for the next level of tests (e.g. more dynamic eID test cases by integrating eID nodes into the transactions, test cases covering related systems, e.g., adding actual Base Registries to the test cases).</p>
<p>The tests will start with static and pre-agreed data. This is to be discussed in and shared through the relevant subgroup (Testing and deployment) and/or collaborative space on Teams.</p>
<p>Those Member States that want to go further and create custom datasets or dynamic datasets for bilateral tests can do so as well.</p>
<p></p>assess their current state of play regarding their Once-Only Technical System developments. In addition to testing, Member States experts collaborated on improving the Once-Only Technical System <a href="https://twitter.com/EU_OnceOnly/status/1669369947095482368" target="_blank">user-experience</a>, learned about <a href="https://twitter.com/EU_OnceOnly/status/1669323727769665542" target="_blank">lifecycle management updates</a> to the Once-Only Common Services, the use of eIDAS eID in realising this System, related systems and defining operational arrangements for the Once-Only domain.</p>
<p>The Commission will publish an event report for the June Projectathon shortly. In the meantime, you can consult the <a href="https://ec.europa.eu/digital-building-blocks/sites/display/OOTS/Commission+publishes+event+report+for+April+2023+Once-Only+Technical+System+Projectathon" target="_blank">April Once-Only Technical Projectathon event report</a>, summarising key results from the testing that cook place from 19-21 April 2023.</p>
<p>On the final day of this Projectathon, the ‘OOTS & EU DI Wallet Synergies and Interoperability Contact Group’ met to discuss the topic of power and mandates and data sharing in the context of cross-border identification using the European framework for digital identity (known as eIDAS).</p>
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