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Medium urgency

Defense Federal Acquisition Regulation Supplement: Data Universal Numbering System to Unique Entity Identifier Transition (DFARS Case 2022-D023)

Detected July 30, 2026 · in Government Contracting (SAM/FAR)

DoD final rule aligns DFARS with the federal transition from DUNS to Unique Entity ID (UEI) for contractor identification in SAM.gov.

Aforeworn detected this change in the Government Contracting (SAM/FAR) space on July 30, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated Medium urgency. All entities doing business with the Department of Defense, including defense contractors, subcontractors, and grant recipients registered in SAM.gov. should confirm how it applies to their specific situation before acting. There is a time constraint attached: Immediately upon publication (September 26, 2024). No transition period specified.. Acting after that point can mean penalties, a lapsed licence, or lost eligibility — exactly the kind of surprise Aforeworn exists to prevent. Aforeworn monitors Government Contracting (SAM/FAR) continuously and turns every detected change into a plain-English briefing like this one, so you always know first. Forewarned is forearmed.

What changed

The DFARS is updated to replace references to the Data Universal Numbering System (DUNS) with the Unique Entity Identifier (UEI) issued by SAM.gov, effective immediately upon publication.

Who it affects

All entities doing business with the Department of Defense, including defense contractors, subcontractors, and grant recipients registered in SAM.gov.

What you must do

Ensure your SAM.gov registration uses a valid UEI instead of a DUNS number. If you already have a UEI, no action is needed; if not, obtain one via SAM.gov.

Deadline

Immediately upon publication (September 26, 2024). No transition period specified.

Source: https://www.federalregister.gov/documents/2024/09/26/2024-21095/defense-federal-acquisition-regulation-supplement-data-universal-numbering-system-to-unique-entity

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