The NEF 260 transmits an NIDD configuration response message to the AF 300 (S36_1). At least one of the quota, the rate control, and the charging policy relating to the UE 200 updated by the UDM 290 may be set in the NIDD configuration response message (S36_1). The NEF 260 may set a cause indicating a fact (reject) of being unable to receive at least one or all of the quota, the rate control, and the charging policy set in the NIDD configuration request message (S32_1). The NIDD configuration request message may be a T 8 set suggested network configuration response message.