As per Guidelines for the implementation of the Agreement on Technical Cooperation between ISO and CEN (the Vienna Agreement), representatives of an ISO or CEN committee attending a meeting of a working group of the other organization shall have the status of observers. Up to four representatives may be appointed to attend meetings of technical bodies of the other organization.

28 Feb CAG made a recommendation to request ISO to register 4 ISO/TC 154 experts (Mr. Yu Shi (shiyu@bnu.edu.cn), Ms. Zhaoyang Sun (sunzhy@cnis.ac.cn), Mr. Hisanao Sugamata (hsedi0111@gmail.com) and Ms. Sue Probert (suesiprobert@live.com) as the ISO observers to CEN/CENELEC JTC24.

The ballot is initiated based on the Vienna Agreement and the CAG recommendaiton.