Section: 5.9.6 Data Network Name (DNN)
Content: A DNN is equivalent to an APN as defined in TS 23.003[ Numbering, addressing and identification ]  [19]. Both identifiers have an equivalent meaning and carry the same information. The DNN may be used e.g. to: - Select a SMF and UPF(s) for a PDU Session. - Select N6 interface(s) for a PDU Session. - Determine policies to apply to this PDU Session. The wildcard DNN is a value that can be used for the DNN field of Subscribed DNN list of Session Management Subscription data defined in clause 5.2.3.3 of TS 23.502[ Procedures for the 5G System (5GS) ]  [3]. The wildcard DNN can be used with an S-NSSAI for operator to allow the subscriber to access any Data Network supported within the Network Slice associated with the S-NSSAI.