QAD 2017 Enterprise Edition > User Guides > Costing > Setting Up Product Costing > Defining Product Structures or Formulas
  
Defining Product Structures or Formulas
Product structures attach component items to the parent item and define the quantity to use. The information in a product structure is used to calculate lower-level costs. For more information on product structures, see QAD Manufacturing User Guide.
For costing purposes, product structures provide the following information:
Component items and the quantity required to make one of the parent item
Start and end effective dates for component items
Structure types defining component/parent relationships
Component scrap factor
The operation number in the routing or process where the component is used
Use Product Structure Maintenance (13.5) to identify raw materials or subassemblies required to produce a finished product or subassembly. Use Formula Maintenance (15.5) to identify ingredients or intermediates required to produce a finished product or intermediate.