3GPP 24.501 v20.0.0 — the document's own text
8.2.19.20 CAG information list
Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).
This IE may be included to assign new "CAG information list" to the UE or delete the "CAG information list" at the UE side.