1. For Union non-customs formalities and systems listed in Part A of the Annex, the national single window environments for customs shall provide the following functionalities:
(a)
enabling economic operators to submit the relevant information required for the fulfilment of the applicable customs formalities and Union non-customs formalities; and
(b)
communicating to economic operators the electronic feedback from customs authorities and partner competent authorities regarding the fulfilment of customs formalities and Union non-customs formalities.
2. For Union non-customs formalities and systems listed in Part B of the Annex, the national single window environments for customs may provide the functionalities listed in paragraph 1. In that situation, the same set of functionalities as those listed in paragraph 1 shall be provided.