Path Switch Request Setup Failed Transfer IE
For each PDU session resource with failed switching, NG-RAN includes Path Switch Request Setup Failed Transfer IE of the Path Switch Request message. This message includes the cause value, with the details on cause for the unsuccessful switching to Target NG-RAN.
Note | SMF supports only the decoding of N2 Cause IE. |
The Path Switch Request Setup Failed Transfer IE includes the following causes and their cause values:
Cause | Cause Value |
Description |
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Radio Network Layer |
User Plane Security Enforcement |
NG-RAN includes the following cause values in case the User Plane Security Enforcement information is unfulfilled. These cause values have either the Required or Preferred value:
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Not Supported 5QI Value |
NG-RAN includes this cause value when the Target NG-RAN accepts none of the QoS Flows of a PDU Session. |
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Slice not supported |
NG-RAN includes the following cause values when the corresponding network slice isn't supported in the Target NG-RAN.
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Resource Unavailability |
NG-RAN includes the following cause values when insufficient resources are available to switch in the Target NG-RAN.
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Unspecified |
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