Case C-134/22, Collective Redundancies

What is the purpose of the second subparagraph of Article 2(3) of Council Directive 98/59/EC of 20 July 1998 on the approximation of the laws of the Member States relating to collective redundancies, according to which the employer is to forward to the competent public authority a copy of, at least, the elements of the written communication which are provided for in the first subparagraph, point (b), subpoints (i) to (v)?