From 1 December 2025, you will only be able to make ENS declarations via ICS2

Do you bring goods from outside the EU into the European Customs Union? Then you will have to deal with Import Control System 2 (ICS2), the new declaration system for the Entry process. From 1 December 2025, you will no longer be able to submit Entry Summary Declarations (ENS) via ICS1 (DMF). This will only be possible via ICS2.