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.

Update Service Operation Towards vSMF Call Flow
Update Service Operation Towards vSMF Call Flow Description
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.

HTTP Status Codes for vSMF Update Error

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