Unique Entity Identifier
Also known as: UEI, SAM UEI
The Unique Entity Identifier (UEI) is the 12-character alphanumeric identifier assigned by SAM.gov to every entity registered to do business with the federal government. It replaced the legacy DUNS number in April 2022 as the primary entity identifier for federal procurement.
Related terms
- SAM.gov
SAM.gov is the official U.S. government website where vendors register to do business with the federal government, search for opportunities, and check exclusion lists. Active SAM registration is a prerequisite for receiving any federal contract award and for posting an SPRS score or CMMC affirmation.
- CAGE Code
A CAGE Code is a five-character alphanumeric identifier assigned to suppliers doing business with the U.S. federal government. It is the unique identifier under which an organization's SPRS score and CMMC affirmation are posted.