Sales items, but also items used as components only (production items or ingredients), must first be enabled for purchasing if they are to appear in the list of possible purchase items or in the purchasing overview.

1. Open an item.
2. Click on   Supplier items in the side navigation. An input window for supplier items will open.
3. Enable   Purchasing by clicking on the button in the toolbar of the  Supplier items tab.
4. For better filtering, flag an item as   Stock item if it is usually available in large quantities in the warehouse.
   Example: salt, pepper, flour, etc.
5. Enter one or more supplier items with a price (Creating suppliers and supplier items). Items are only listed for purchasing if at least one supplier item is specified with a price and is also enabled for purchasing.
6.  Save your input by clicking on the icon in the top left-hand corner of the input window.