Question: Which of the following is NOT a mandatory charging information collected by the Visited Public Land Mobile Network (PLMN) for Location Services (LCS)?
Option 1: Identity of the target UE: User Equipment
Option 2: IMSI: International Mobile Subscriber Identity of the subscriber's home network
Option 3: Location of the target UE (e.g., cell ID, location area ID)
Option 4: Results of positioning (e.g., success/failure, positioning method used)
Explanation: The correct answer is Option 2 because, while the identity of the target UE is indeed collected, there's no explicit mention of collecting the IMSI of the subscriber's home network as part of the charging information in the visited PLMN for LCS. The other options (1, 3, and 4) are all listed as required charging information to be collected by the visited PLMN.