3GPP 24.501 v20.0.0 — the document's own text
8.2.19.27 Service-level-AA container
Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).
The network shall include this IE when the AMF receives the Service-level-AA payload or the UUAA-MM result from the UAS-NF during the UUAA-MM procedure or the UUAA revocation procedure. The network shall also include this IE if the AMF receives from the UAS-NF, the CAA-level UAV ID as part of the UUAA-MM procedure.