Measurement information configured by MN for SN, that is, NR frequency (result of measurement of serving cell and neighboring cell). This information may be included in an MN RRC part.
        Measurement information configured by SN for frequency of NR (result of measurement of serving cell and neighboring cell). This information may be included in an SN NR RRC container part.
        One-bit indicator indicating, as failure type, failure of conditional PSCell change. This information may be included in an MN RRC part and an SN NR RRC part.
        Available conditional PSCell change candidate cell configuration information (a PCI, a CGI, and a candidate ID of a candidate cell). This information may be included in an MN RRC part and an SN NR RRC part.
        Information on cell failing in the attempted conditional PSCell change (a PCI, a CGI, a candidate ID, and a node ID as failed conditional PSCell information). This information may be included in an MN RRC part and an SN NR RRC part.
    
    
At least one information among the pieces of information described above may be included in an SCGFAilureInformationNR message as information on failure of a general handover or a conditional handover according to a PSCell change or a conditional PSCell change, and may then be transmitted to the MN (operation 16-45).