What's the difference between the catalog, procurement, and products and services category hierarchies?

A procurement category hierarchy maps how spend is categorized in your organization. Use it when setting up approval rules, deriving spend accounts, and in reports.

A catalog category hierarchy defines the structure for browsing the shopping catalog. Requesters use it when creating purchase requisitions.

A supplier products and services category hierarchy identifies the categories of products of services that suppliers and prospective suppliers can provide. Use it when setting up a supplier profile, in supplier registration, and to identify suppliers to invite to sourcing negotiations.