Section: 16.6 AF Authorization for network slice quota-usage information notification/retrieval 16.6.2 General
Content: If an AF is deployed within the 3GPP operator domain, an S-NSSAI is allowed to be sent to the AF. The baseline procedure for notifying the AF slice usage information (e.g. number of UEs and PDU Sessions in the slice indicated by the S-NSSAI) and the procedure for retrieving slice usage information by the AF are defined in TS 23.502[ Procedures for the 5G System (5GS) ]  [8]. If an AF is deployed outside the 3GPP operator domain, an S-NSSAI is not allowed to be sent to the AF as required in clasue 5.9.2.3. The procedure for notifying the AF slice usage information (e.g. number of UEs and PDU Sessions in the slice indicated by the S-NSSAI) and the procedure for retrieving slice usage information by the AF are described in clause 16.6.3.