Communication and reporting
Article 4
1. Member States and the Commission shall share information on planning and on progress in implementing each of the systems. 2. Member States shall submit to the Commission national project and migration plans and the table on their progress in developing and deploying the electronic systems referred to in Article 278a(4) of Regulation (EU) No 952/2013 by 31 January and by 30 June each year. The plans and the table shall include the relevant information necessary for the annual report to be submitted by the Commission under Article 278a(1) of Regulation (EU) No 952/2013. 3. Member States shall inform the Commission immediately of any important updates in their national project and migration plans. 4. Member States shall make the technical specifications related to the external communication of the national electronic system available to economic operators in a timely manner.