Under Article 278 of the UCC, use of paper-based customs systems is only possible until the end of 2020. However, as a number of electronic systems required for the full implementation of the UCC will not be ready by that time, the Commission is preparing a proposal to extend the transitional period during which paperbased systems may continue to be used for certain procedures until the end of 2025. EU Commissioner Moscovici on 20 November 2017 explained to the EP's Internal Market and Consumer Affairs (IMCO) Committee that approximately 80% of the IT work will be done by 2020, but that "realism" calls for an extension of the timelines for the rest of the IT systems.