With the next substantial modification or addition of a new MS, the sponsor will need to complete the application dossier in accordance with the documents required by Annex I of the CTR, at least concerning that part of the application dossier which will be assessed in the procedure (e.g., in case of a substantial modification on Part II only, a sponsor should complete all elements related to Part II of the dossier relevant for the Member State(s) concerned by the substantial modification).