important as Article 50 TEU lowers the conditions for a withdrawal as stipulated under international law. However, the respective roles the EU institutions will play during the negotiations have been clarified A Member State which decides to withdraw shall notify the European Council of its intention. The Withdrawal Agreement concluded between the European Union and the United Kingdom establishes the terms of the United Kingdom's orderly withdrawal from the EU, in accordance with Article 50 of the Treaty of the European Union. Article 50 TEU: Withdrawal of a Member State from the EU. FINAL PROVISIONS. Any Member State may decide to withdraw from the Union in accordance with its own constitutional requirements. On 29 March 2017 the UK notified the European Council of its intention to leave the EU, thus formally triggering Article 50 of the Treaty on European Union. "The Withdrawal Agreement creates legal certainty where Brexit created uncertainty. Under Article 62 of the Vienna Convention, a state party can withdraw from a treaty only if there is a fundamental change of circumstances which has occurred compared to those existing at the time of the conclusion of that treaty. UK withdrawal from the European Union – Legal and procedural issues Page 4 of 36 meaning that negotiations could only start once the UK has officially notified the European Council of its intention to withdraw under Article 50 TEU. - Michel Barnier, 17 October 2019. TITLE VI. 1. It preserves the Union’s interests." It provides for the negotiation of a withdrawal agreement between the EU and the withdrawing state, defining in particular the latter's future relationship with the Union. In CONSOLIDATED VERSION OF THE TREATY ON EUROPEAN UNION. 2. Article 50 is a clause in the European Union's (EU) Lisbon Treaty that outlines the steps to be taken by a country seeking to leave the bloc voluntarily. Article 50.