SDM Errors

The following errors are expected on UDM interface during the GET Operation, and causes the actions described below:

SDM Errors - 1
Application Error

Description

NAS Cause Code

Action

404 Not Found

DATA_NOT_FOUND

The requested UE subscription data is not found/does not exist. This error is applicable to all Nudm_SDM GET operations.

#7, 5GS services not allowed

Registration Reject

USER_NOT_FOUND

The user does not exist.

#7, 5GS services not allowed

Registration Reject

The following errors are not expected. If they occur, it is either due to a logic miss or a complicated race condition.

SDM Errors - 2
Application Error

Description

Response to UE

404 Not Found

CONTEXT_NOT_FOUND

It is used during the modification of an existing subscription when no corresponding context exists.

Need to respond with cause #9, UE Identity Not Derived By Network