By way of derogation from Article 15(2) of Implementing Regulation (EU) No 809/2014 and in case the Member States use the derogation as provided for in Articles 1 and 3 of this Regulation, for the year 2015, the amendments made to the single application or payment claim in accordance with paragraph 1 of that Article shall be notified to the competent authority in writing by 15 June.