Question: Upon receiving an Update ProSe Subscriber Data request for a known IMSI, what action does the ProSe Function take if the UPR-Flags indicate deletion of ProSe subscription data?
Option 1: The ProSe Function updates the corresponding data without considering the UPR-Flags.
Option 2: The ProSe Function deletes the associated ProSe UE context if it has been stored before.
Option 3: The ProSe Function returns a DIAMETER_ERROR_USER_UNKNOWN result code.
Option 4: The ProSe Function sets the Result-Code to DIAMETER_UNABLE_TO_COMPLY without taking any further action.
Explanation: When the UPR-Flags in an Update ProSe Subscriber Data request indicate that the ProSe subscription data is to be deleted for a known IMSI, the ProSe Function's specified behavior is to delete the associated ProSe UE context, provided it has been stored previously. This ensures synchronization between the ProSe Function and the subscriber's data status.