Update Service Operation Towards vSMF Call Flow
The NF Service Consumer, such as hSMF, updates a PDU session in the vSMF. The NF Service Consumer also provides the required information for the V-SMF to send the N1 SM signalling to the UE by using the HTTP POST method.
This section describes the Update service operation towards vSMF call flow.

Step | Description |
---|---|
1 |
NF Service Consumer, such as hSMF, sends a POST request to modify a PDU session to the resource representing a PDU session resource in the vSMF. |
2 |
If the PDU session update is successful, the vSMF sends "204 No Content" or "200 OK" to the NF Service Consumer. |
3 |
If the PDU session update fails, the vSMF sends the HTTP status code, as listed in the HTTP Status Codes for vSMF Update Error table. For the 4xx or 5xx response, the message body contains a vSMF Update Error structure, including a ProblemDetails structure with the "cause" attribute. |
Data Type |
HTTPS Status Code |
Cause |
Details |
Title |
---|---|---|---|---|
vSMF Update Error |
400 |
UNSPECIFIED _NF_FAILURE |
Ngap_Decode _failed |
Invalid_Param |
vSMF Update Error |
500 |
UNSPECIFIED _NF_FAILURE |
Failure_N4 _Response |
Network _Failure |
vSMF Update Error |
500 |
SYSTEM_ FAILURE |
Procedure _Aborted |
Network _Failure |
vSMF Update Error |
500 |
INSUFFICIENT_ RESOURCES |
Failed_Due_ To_Insufficient_ Resounces_At_Gnb |
Network _Failure |
vSMF Update Error |
400 |
UNSPECIFIED_ NF_FAILURE |
Qfi_Failed _List_Invalid |
Network _Failure |