A bill of materials is an item that consists of other items or other bills of materials. For example, a loaf of bread is a bill of materials for the food industry because it consists of many other items, including flour, eggs and yeast. A sandwich is a bill of materials on two levels because a sandwich consists of ham, cheese and bread, for example, and bread is itself a bill of materials.
To build up and maintain bills of materials, click the Item button on the Item Card and select Assembly List, Bill of Materials. The program will display a Bill of Materials window in which you can set up some lines, each representing one component of the bill of materials. The window shows only the components of the bill of materials related to the Item Card on which you clicked the Item button.
A bill of materials can consist of a very large number of components, which can be resources or items. Items can themselves be bills of materials. It is recommended, however, to set up as simple a structure as possible.
If an item is a bill of materials, there will be a check mark in the Bill of Materials check box on the Item Card. To see the list of components that make up the item, click the Item button on the Item Card and select Assembly List, Bill of Materials.