The First ASEAN Plus Three Senior Officials Meeting on Youth (1st SOMY+3) was held on 4-5 November 2004 in Phnom Penh, Cambodia.
The 1st SOMY+3 first adopted the Terms of Reference (TOR) on 4 November 2004, Phnom Penh, Cambodia. This TOR was adopted by the 7th AMMY+3 on 19 July 2019 in Vientiane, Lao PDR.