3GPP 24.501 v20.0.0 — the document's own text
8.3.8.1 Message definition
Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).
The PDU SESSION MODIFICATION REJECT message is sent by the SMF to the UE to indicate rejection of the PDU SESSION MODIFICATION REQUEST. See table 8.3.8.1.1.
Message type: PDU SESSION MODIFICATION REJECT
Significance: dual
Direction: network to UE
Table 8.3.8.1.1: PDU SESSION MODIFICATION REJECT message content
| IEI | Information Element | Type/Reference | Presence | Format | Length |
|---|---|---|---|---|---|
| Extended protocol discriminator | Extended protocol discriminator9.2 | M | V | 1 | |
| PDU session ID | PDU session identity9.4 | M | V | 1 | |
| PTI | Procedure transaction identity9.6 | M | V | 1 | |
| PDU SESSION MODIFICATION REJECT message identity | Message type9.7 | M | V | 1 | |
| 5GSM cause | 5GSM cause9.11.4.2 | M | V | 1 | |
| 37 | Back-off timer value | GPRS timer 39.11.2.5 | O | TLV | 3 |
| 61 | 5GSM congestion re-attempt indicator | 5GSM congestion re-attempt indicator9.11.4.21 | O | TLV | 3 |
| 7B | Extended protocol configuration options | Extended protocol configuration options9.11.4.6 | O | TLV-E | 4-65538 |
| 1D | Re-attempt indicator | Re-attempt indicator9.11.4.17 | O | TLV | 3 |