2. Where the European standard on electronic invoicing, drawn up in accordance with the request referred to in paragraph 1, satisfies the requirements contained therein and where a test phase in accordance with the fifth subparagraph of paragraph 1 has been completed, the Commission shall publish the reference to the standard in the Official Journal of the European Union, together with the list of a limited number of syntaxes drawn up in accordance with the request referred to in paragraph 1. That publication shall be completed by 27 May 2017.