Unique Entity ID

On April 4, 2022, the unique entity identifier used across the federal government changed from the DUNS Number to the Unique Entity ID (generated by SAM.gov). The Unique Entity ID is a 12-character alphanumeric ID assigned to an entity by SAM.gov. As part of this transition, the DUNS Number has been removed from SAM.gov.

System for Award Management (SAM)
Registration Guide

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