Sources and references

The guides on this site rely on the following sources, checked at build time on 2026-11-03. The current UNDP codeset always outranks any summary below for a live code.

• United Nations Development Programme, UNSPSC pages: https://www.undp.org/unspsc
• United Nations Global Marketplace, UNSPSC search pages: https://www.ungm.org/Public/UNSPSC
• State of California, Department of General Services, United Nations Standard Products and Services Code page: https://www.dgs.ca.gov/PD/Resources/Page-Content/Procurement-Division-Resources-List-Folder/United-Nations-Standard-Products-and-Services-Code-UNSPSC
• Cornell University, Division of Financial Services, UNSPSC classifications: https://finance.cornell.edu/procurement/buyers/unspsc
• State of Indiana, bidder guidance on UNSPSC: https://www.in.gov/idoa/procurement/files/BidderProfile_UNSPSCforBidders.pdf
• UNSPSC summary with version history and governance, used only where it agrees with the official sources above: https://en.wikipedia.org/wiki/UNSPSC

Key facts carried across the guides from those sources: UNSPSC was jointly developed by the United Nations Development Programme and Dun and Bradstreet in 1998; GS1 US managed it until 31 December 2024 and the United Nations Development Programme has managed it since 1 January 2025; the code has four primary levels, segment, family, class and commodity, each two digits, with an optional fifth pair for business function; the release cited at build time as the most recent in the summary source was UNv26.0801, dated 14 August 2023, with 158,448 total items, and readers should check the current UNDP codeset for any later release before quoting totals.