& Unique Entity Identifiers

Effective April 4, 2022, all libraries must have a unique entity identifier (UEI) assigned by the United States government in order to receive federal funding, including IMLS funds distributed by the Arkansas State Library.

The UEIs replace existing DUNS numbers.


Libraries may register for a new UEI online at the System for Award Management ( website. is an official website of the U.S. Government.

If a county or municipality holds the DUNS number for your library, please contact them to ensure they completed the DUNS to UEI transition.

After the registration process is complete, libraries may report their new UEIs to Manager of Grants and Special Projects Debbie Hall.