UNSPSC

UNSPSC — the United Nations Standard Products and Services Code — is the international hierarchy classifying products and services for purchasing: a four-level structure (segment, family, class, commodity) in which each purchase, supplier registration, and award can be coded. Canadian federal procurement has been migrating to it from the national GSIN scheme, so both systems now appear across Canadian datasets.

The migration matters to anyone who researches rather than browses. A time series that switches classification mid-stream breaks unless the codes are mapped, and a supplier file coded under the legacy scheme reaches notices coded under the new one imperfectly. The practical habits: know which scheme a dataset or portal uses before comparing across years; register under the current scheme's codes at the granularity you actually sell; and when studying a category, search both schemes' relevant codes or use a tool that normalizes them — pubsec.pro's free feed does. Classification is plumbing until it leaks; a supplier whose codes straddle a migration boundary quietly loses notices for a season.

@misc{pi-2026-definitions-unspc,
  author = {{The Procurement Institution}},
  title  = {UNSPSC — definition},
  year   = {2026},
  url    = {https://procurementinstitution.org/definitions/unspc},
  note   = {Release 2026.10}
}