The agreement also provides for a transitional period, which will last until 31 December 2020 and can be extended by mutual agreement. During the transitional period, EU legislation will continue to apply to the UK (including participation in the European Economic Area, the internal market and the customs union) and the UK will continue to contribute to the EU budget, but the UK will not be represented in EU decision-making bodies. The transition period will give businesses time to adapt to the new situation and the new era, so that the British and European governments can negotiate a new trade agreement between the EU and the UK.   The agreement defines the goods, services and processes associated with them. Any provision of goods or services legally put on the market before leaving the EU may be made available to consumers in the UK or in the EU Member States (Article 40-41). Under the withdrawal agreement, the UK would include a 21-month transitional period with the EU after Brexit. The Northern Ireland Protocol, known as the Irish Backstop, was an annex to the November 2018 draft agreement outlining provisions to avoid a hard border in Ireland after the UK`s withdrawal from the European Union. The protocol provided for a provision of the safety net to deal with the circumstances in which satisfactory alternative arrangements were to come into force at the end of the transition period. This project has been replaced by a new protocol that will be described as follows. But on this occasion, there was a decisive difference: MEPs voted only on the withdrawal agreement and not on the political declaration.
Previously, both votes were voted on and rejected. The withdrawal agreement also contains provisions for the United Kingdom to leave the Convention setting the status of European schools, with the United Kingdom bound by the Convention and accompanying regulations on accredited European schools until the end of the last academic year of the transition period, i.e. at the end of the spring semester 2020-2021.  Article 50 does not exclude the renegotiation or modification of a withdrawal agreement during an extension period. It is not specified what should or should not happen during this period. Indeed, the withdrawal agreement has already been “adapted” to take into account the extensions of Article 50 (references to 29 March have been replaced by the more flexible “effective date of the withdrawal agreement”). On 15 January 2019, the House of Commons voted with 230 votes against the Brexit withdrawal agreement the largest vote against the British government in history.  The government may survived a vote of confidence the next day.  On March 12, 2019, the House of Commons voted 149 votes against the agreement, the fourth-biggest defeat of the government in the history of the House of Commons.
 A third vote on the Brexit withdrawal agreement, widely expected on 19 March 2019, was rejected by the House of Commons spokesman on 18 March 2019, on the basis of a parliamentary convention of 2 April 1604, which prevented British governments from forcing the House of Commons to vote several times on a subject already voted on by the House of Commons.    An abbreviated version of the withdrawal agreement, in which the annex political statement had been withdrawn, consisted of the test of “substantial amendments,” so that a third vote was held on 29 March 2019, but was rejected by 58 votes.  The agreement covers issues such as money, citizens` rights, border agreements and dispute resolution.