CHARGING METHODS, APPARATUSES, SYSTEM, COMPUTER STORAGE MEDIUM AND COMPUTER PROGRAM

Embodiments of this application disclose a charging method and a related product. The charging method includes: sending a charging start request for a packet data unit (PDU) session to a charging function apparatus, where the charging start request carries an indication receiving address; receiving an indication message that is sent by the charging function apparatus based on the indication receiving address, where the indication message carries an indication type; and performing charging processing based on the indication type. In this way, in a service-based interface mechanism, the charging function apparatus on a server side has a capability of enabling, as required, a charging trigger function apparatus on a client side to perform some specific operations, to meet a personalized charging requirement.