The European Securities and Markets Authority (ESMA) has announced that the transition to the new XML Schema and updated validation rules will not occur on Monday, 18 February 2019, as earlier planned. It will now be postponed until Q3 2019.
More information is available at ESMA's website (pages 2–3 in the document). The TRS 2 system's production environment will continue to use the system version, XML Schema and validation rules that apply as of 2019-02-05 until further notice. FI will provide more information about the test environment shortly.