While examining controls on the use of portable storage devices, an assessor conducts an interview...

While examining controls on the use of portable storage devices, an assessor conducts an interview with a mid-level internal system administrator. The administrator describes the process to check out portable storage devices, which includes a user emailing IT staff directly, verifying that the media classification label matches the data classification, and limiting use of the device to a specified external system.

What is a MISSING element for the assessment of AC.L2-3.1.21: Portable Storage Use?