The first step is to confirm that the variable in question is on your VIP List. You can confirm this two different ways, either by viewing the VIP Summary or the VIP Lists section found within the Transaction Details page or, if permissions allow, by navigating to the Fraud Control > VIP Lists menu of the Agent Web Console (AWC).
NOTE: If confirming from the Transaction Details page, you can hover your mouse over the VIP Summary entry to see the date it was added.
If you have confirmed the addition of the variable via the Transaction Details page, you can navigate to the Fraud Control > VIP Lists menu to see variables that have been added to your various VIP Lists. Simply select the VIP List in question, identify the variable in the list, and review the Data Entered column for the correlating timestamp. If you do not initially see the desired variable, it could be that you are only viewing the first 50 entries and need to expand your search, by either selecting the gear icon in the upper right hand corner, or by using the pagination on the bottom right corner of the page.
Additionally, if you ever need to know who added a variable to the VIP List you can find this information by navigating to Reports > Security > Fraud Control. From here, select VIP Lists from the Audit Type drop down menu, and enter in a date range. (The date range can be obtained either by hovering over the entry on the Transaction Details page or via the VIP List entry.) Next, select the Create Audit Report button. The results will display the customer email address, and name of the individual who made the addition as well as the date it was made, the VIP Type, Requested Action, VIP Value, and the New Value.
Remember, this information is only applicable to those that have Admin and Risk Editor permission levels, since these are the only levels that have access to the Fraud Control tab. That being said, Risk Editors do not have permission to review the VIP Gift Card (subsection of Payments) or Device ID fields.