Add a stock item with a sales price and purchase cost so it can be tracked in inventory.
An item record carries two prices at once — what you pay to acquire it and what you charge to sell it — and that split is what lets Redovix compute margin automatically instead of you calculating it by hand on every transaction.
A brand-new item has no stock, even after you save it here — creating the item and receiving stock into it are two separate actions by design. Quantity on hand only moves when a real transaction says so: up on a purchase receipt, down on a delivery note. This tutorial only covers the first half; the procurement tutorials cover getting real stock into this item.
That separation matters the first time you try to sell an item with nothing received against it yet — by default Redovix blocks a sale that would take stock negative, which is a deliberate guardrail, not a bug. It's controlled by the "Allow negative stock" preference covered in the company preferences tutorial.