Before the first sale, a small amount of ground must exist:
- Products — something to sell, with its unit of measure and its prices (see Chapter 6). Service products need no stock; stocked products do.
- Customers — created in this module (§3.6), usually with a category that carries their tax and ledger defaults.
- Warehouses and stock — in [Standard], goods leave on waybills, so the stock must be in a warehouse to leave from (Chapter 5). In [Simple] the invoice itself moves the stock.
- Company choices made once — your workflow depth (0.5); whether credit management is on (0.6) — without it there are no credit limits or holds to explain; and your sales validity days, which stamp every order with the date its prices stop being guaranteed.
Its neighbours: Inventory feels every waybill (and every [Simple] invoice) as stock leaving; Accounts receives the posted invoice as a receivable and the receipt as bank money; Procurement shares the product catalogue and the warehouse; Manufacturing and Time Tracking sell their output through this module's invoices. The Sales cockpit (Chapter 2) reads all of it back to you as numbers.