Question: Upon receiving a measIdToRemoveList from the network, what action(s) should a User Equipment (UE) take for each matching measId in its current VarMeasConfig?
Option 1: Only remove the entry with the matching measId from the measIdList within the VarMeasConfig.
Option 2: Remove the measurement reporting entry for this measId from VarMeasReportList (if included), stop and reset the associated timer, and if applicable, disable measurement reporting for fast unknown SCell activation.
Option 3: Ignore the measId if it's not part of the current UE configuration and do not take any action for matching IDs.
Option 4: Send an error message to the network for each non-matching measId in the list.
Explanation: When a UE receives a measIdToRemoveList, it must remove the entry from measIdList, stop and reset the relevant timer, remove the measurement reporting entry from VarMeasReportList if present, and disable measurement reporting for fast unknown SCell activation if applicable, ensuring a clean removal of the measurement configuration.