3GPP 24.501 v20.0.0 — the document's own text

D.2.1.4 Network-requested UE policy management procedure not accepted by the UE

Taught in 5. Finding your way around TS 24.501 (CT1 — the group that writes what your phone says, in depth), 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).

If the UE could not execute all instructions included in the UE policy section management list IE successfully, the UE shall:

set the PTI IE to the PTI value received within the MANAGE UE POLICY COMMAND message and encode the results by including:

the UPSI associated with the instructions which could not be executed successfully;
the failed instruction order set to order of the instruction in the UE policy section management sublist of the received UE policy section management list IE which could not be executed successfully; and
the cause of the failure,

in the UE policy section management result IE as specified in clause D.6.3 and include it in a MANAGE UE POLICY COMMAND REJECT message, and

transport the MANAGE UE POLICY COMMAND REJECT message using the NAS transport procedure as specified in clause 5.4.5.

Upon receipt of the MANAGE UE POLICY COMMAND REJECT message, the PCF shall stop timer T3501. Any instruction that was included in the UE policy section management list IE but not indicatedin the UE policy section management result IE of the received MANAGE UE POLICY COMMAND REJECT message, shall be considered as successfully executed.

The PCF should ensure that the PTI value assigned to this procedure is not released immediately.

NOTE: The way to achieve this is implementation dependent. For example, the PCF can ensure that the PTI value assigned to this procedure is not released during the time equal to or greater than the default value of timer T3501.

Upon receipt of the notification from the AMF that the UE is not reachable, the PCF shall stop the T3501.