The #list of "parties that commit grave violations affecting #children in situations of armed conflict" is just an annex to "Children and armed conflict", an annual report prepared by the #UN #SecretaryGeneral for the #SecurityCouncil, which requested it in resolution 1261(1999)
The reports have several dozens of pages, mentioning specifically where and how children were harmed, by which parties. Parties don't just get "listed".
The 2023 report: