Question: What triggers the creation of a Location Services (LCS) Mobile Originating (MO)-CDR, LCS Mobile Terminating (MT)-CDR, and LCS Network Initiated (NI)-CDR in a Packet Switched (PS) domain?
Option 1: Receipt of a 'Location Request' message at the UE/MS
Option 2: Successful authentication of the UE/MS at the SGSN
Option 3: Handover of the UE/MS from one RNC to another
Option 4: Receipt of the RANAP 'Location Report' message by the SGSN, given that CDR generation is activated according to Charging Characteristics
Explanation: The creation of LCS-MO-CDR, LCS-MT-CDR, and LCS-NI-CDR in a PS domain is triggered by specific events related to location services. Among the provided options, the correct trigger is the receipt of the RANAP 'Location Report' message by the SGSN, but only if CDR generation is activated as per the Charging Characteristics. This ensures that charging information collection is aligned with network policies and requirements for location-based services.