The Unique Entity Identifier (UEI) is the official government-wide identifier for entities doing business with the federal
government, replacing DUNS. Issued through SAM.gov, the UEI is used across award and procurement systems for consistent tracking
and validation. Transitioning to UEI reduces reliance on third-party numbering and centralizes updates within SAM. Contractors
must ensure their UEI is active and associated with accurate business information, as discrepancies can delay awards or payments.
UEI (Unique Entity Identifier)
Government-wide identifier that replaced DUNS for entity identification in federal awards.
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Related Glossary Terms
The official compilation of permanent U.S. federal laws, providing the statutory basis for many contracting requirements.
A global classification system used to categorize products and services for procurement and spend analysis.
A unique 12-character identifier assigned via SAM.gov to organizations doing business with the federal government, replacing the DUNS number.
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