Various communication systems may benefit from a high quality of service (QoS). For example, fifth generation (5G) wireless communication systems may benefit from differentiated service flows in the user plane that may impact a core network. According to certain embodiments, a method can include determining at a serving radio access network whether a modification of a service flow will impact at least one of a core network service monitoring, controlling, and configuring, and initiating, based on the determination, the modification of the service flow directly with a user equipment or through a controlling network entity located in the core network.