3GPP 24.501 v20.0.0 — the document's own text
6.1.3.3.1 Overview
Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).
In the following clauses, the possible 5GSM sublayer states of the network are described and shown in Figure 6.1.3.3.1.1.

NOTE 1: Not all possible transitions are shown in this figure.
NOTE 2: Some transitions shown in this figure are not applicable to the MA PDU session.