The catalogue needs little, but it needs it first:
- Categories — the grouping your products are filed under; reports, cockpit charts and count scopes all slice by it.
- Units of measure and their conversions (§6.6) — defined before the products that use them.
- Tax codes — each product names the codes its sales and purchases carry, so documents stop asking.
Its neighbours are everyone: the catalogue is the one chapter of setup that Sales, Procurement, Inventory and Manufacturing all stand on, which is why its switches and defaults are few and deliberate — most of what shapes a product lives on the product itself.