In one embodiment, a method includes receiving, by an application function implemented on a service node of a network, notification event information that includes an identification of a user, an Internet protocol address of user equipment associated with the user, and an event type, the notification event information being pushed by a network attachment subsystem to the AF. , n represents 1 or 2, A represents an oxygen atom, W represents an oxygen atom, X represents a halogen atom and m represents an integer of 0 to 4, are compounds useful as herbicides having both of remarkable herbicidal effect and characteristics such as excellent crop-weed selectivity. The accommodating section is provided with supporting sections that respectively support the two arms such that the power supplied member of the mounted process cartridge is abutted on the winding section.