This Recommendation specifies dynamic network slice configuration. The network slice configuration changes the information of functional constituents (e.g., capacity of virtual network function, capacity of virtual link, topology in the dedicated network slice instance). The network slice configuration is updated when the network slice is modified according to the instructions of network slice instance life-cycle management. This Recommendation covers the followings aspect: - An overview of network slice template including its attributes and network slice KPIs; - Relations between network slice instance modification and configuration file; - Procedures of dynamic network slice update.