Section: 4.3.3 PDU Session Modification 4.3.3.1 General
Content: The procedure is used when one or several of the QoS parameters exchanged between the UE and the network are modified and/or to send updated ECS Address Configuration Information as defined in clause 6.5.2 of TS 23.548[ 5G System Enhancements for Edge Computing; Stage 2 ]  [74] to the UE and/or to send the updated DNS server address as defined in clause 6.2.3.2.3 of TS 23.548[ 5G System Enhancements for Edge Computing; Stage 2 ]  [74]. NOTE 1: The conditions when to use this procedure for QoS change as well as the QoS parameters exchanged between the UE and the network are defined in clause 5.7 of TS 23.501[ System architecture for the 5G System (5GS) ]  [2]. NOTE 2: The conditions when to use this procedure for the exchange of ECS Address Configuration Information are described in clause 6.5.2 of TS 23.548[ 5G System Enhancements for Edge Computing; Stage 2 ]  [74]. NOTE 3: The conditions when to use this procedure for the update of DNS server address are described in clause 6.2.3.2.3 of TS 23.548[ 5G System Enhancements for Edge Computing; Stage 2 ]  [74].