On April 6, 2022, the FCC released a Public Notice (DA-22-371) announcing that the General Services Administration’s SAM.gov will transition from the use of the Data Universal Numbering System (DUNS) number to the SAM.gov assigned Unique Entity Identifier (UEI).
News Release – https://www.fcc.gov/document/federal-government-transition-duns-uei / https://docs.fcc.gov/public/attachments/DA-22-371A1.pdf