3GPP 24.501 v20.0.0 — the document's own text
8.2.19.12 LADN information
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 LADN information to the UE or delete the LADN information at the UE side.