Question: What is the primary purpose of the 'Sequence Number' field in charging management for the Circuit Switched (CS) domain?
Option 1: To uniquely identify the User Equipment (UE) involved in a transaction
Option 2: To link partial records generated for a particular connection
Option 3: To provide a timestamp for each recorded event
Option 4: To differentiate between Circuit Switched (CS) and Packet Switched (PS) domain records
Explanation: The Sequence Number field is crucial for maintaining continuity across multiple partial records that belong to the same connection, ensuring accurate reconstruction and management of a connection's data, especially when split into partial records due to billing triggers or network handovers.