DISS replaced which system as the System of Record on March 31, 2021?

• A. Joint Personnel Adjudication System (JPAS)
• B. National Background Investigation System (NBIS)
• C. Defense Information System for Security (DISS)
• D. Defense Visit Office (DVO)

Answer: (A)

This question is about when the authoritative source for personnel security data switched from the old system to a newer one. Joint Personnel Adjudication System handled personnel security adjudication information before the change. On March 31, 2021, the Defense Information System for Security became the System of Record for these data, meaning it is the official, single source of truth for clearance and adjudication information. This transition centralizes the security-data workflow and improves consistency across the DoD.

Note that NBIS is a separate system dealing with background investigations and is not the System of Record being discussed here, and DVO is not the system involved in this replacement.