classification

gs:classification Property

What is being bought, as a scheme-qualified code: CPV in the EU, UNSPSC globally, NIGP in much of the US.

Identifier (IRI)
https://schema.govfresh.com/v1/classification
Used on
gs:Tender
Value
schema:PropertyValue
Profile
procurement

The full definition is in the vocabulary file (Turtle). A static host cannot choose a format by request, so this page and that file are the two ways to read it.