15.5.2.6 PSCell addition/change failure

For analysis of PSCell addition/change failures, the UE makes the SCG Failure Information available to the MN. If the MN can perform an initial analysis, it transfers the SCG Failure Information together with the analysis results to the relevant SN as defined in TS 37.340 [21].

In case there is an SCG failure when UE is configured with CHO with candidate SCG(s), the serving M-NG-RAN node receiving SCGFailureInformation from the UE performs initial analysis. If the SCG failure has been caused by a different M-NG-RAN node, the serving M-NG-RAN node sends SCG FAILURE INDICATION message to the M-NG-RAN node that caused the failure. If it is an SN that caused the failure, the M-NG-RAN node sends SCG FAILURE INFORMATION REPORT message to the SN as defined in TS 37.340 [21].