Section: 28.4.3 Ranges of S-NSSAIs
Content: In the 5G Core Network, an NF Instance may indicate (e.g., while registering its NF profile in the NRF) support for several S-NSSAIs having a common SST value and different SDs, by including such SST value and adding, either a list of ranges of SDs, or a "wildcard" flag representing all SD values for the common SST (see 3GPP TS 29.571[ 5G System; Common Data Types for Service Based Interfaces; Stage 3 ]  [129], clause 5.4.5.1). For an NF registering a list of supported S-NSSAIs in terms of ranges of SDs, or wildcard, the NF may associate a common network slicing policy (such as, e.g., for an AMF to assign a specific DNN to be used with a certain slice) to all S-NSSAIs derived from that SD range. NOTE: The usage of SD ranges to define sets of S-NSSAIs is restricted to be used only by certain protocols/APIs in the 5G Core Network (e.g., NRF, NSSF, AMF…).