Section: 5.4.7.3.1 Network slice-specific EAP result message transport procedure initiation
Content: In order to initiate the network slice-specific EAP result message transport procedure, the AMF shall create a NETWORK SLICE-SPECIFIC AUTHENTICATION RESULT message. The AMF shall set the EAP message IE of the NETWORK SLICE-SPECIFIC AUTHENTICATION RESULT message to the EAP-success or EAP-failure message provided by the AAA-S via the NSSAAF. The AMF shall set the S-NSSAI IE of the NETWORK SLICE-SPECIFIC AUTHENTICATION RESULT message to the HPLMN S-NSSAI or the SNPN S-NSSAI to which the EAP-success or EAP-failure message is related. The AMF shall send the NETWORK SLICE-SPECIFIC AUTHENTICATION RESULT message. The AMF shall retain the authentication result for the UE and the HPLMN S-NSSAI or the SNPN S-NSSAI while the UE is registered to the PLMN (see subclause 5.15.10 in 3GPP TS 23.501[ System architecture for the 5G System (5GS) ]  [8]). Upon receipt of a NETWORK SLICE-SPECIFIC AUTHENTICATION RESULT message, the UE shall pass: a) the EAP-success or EAP-failure message received in the EAP message IE; and b) the HPLMN S-NSSAI or the SNPN S-NSSAI in the S-NSSAI IE; to the upper layers. Apart from this action, the network slice-specific authentication and authorization procedure is transparent to the 5GMM layer of the UE.