4. The secretariat introduced GRPE-79-02-Rev.1, announcing that the next GRPE session would take place on from 14 to 17 January 2020 and recalling the corresponding deadline (21 October 2019) for the submission of official documents. The Chairs and Secretaries of IWGs were invited to approach the secretariat to define the calendar of IWGs meetings for the January 2020 GRPE session. The secretariat also announced the potential shortage of meeting space capacity from October 2019 in the Palais des Nations.