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• Bill of Materials Overview
Chapter 11 - Bill of Materials
Bill of Materials Overview
The Bill of Materials add-on module works in conjunction with the Inventory Control module. It allows you to create new inventory items from other inventory items, called components. Component items can themselves be items you create from other items, or they can be items you purchase from suppliers.
You can use bills of materials for two very different types of processes:
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You can use raw materials to a new inventory item. For example, you can make a guitar out of wood, strings, varnish, paint, and so on.
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You use components to assemble a new inventory item. For example, if you sell computers, you create an item that consists of the computer case, a monitor, a keyboard, and a mouse. The computer case, in turn, contains a specific motherboard with a CPU and memory, a hard drive, a CD drive, and so on. When you assemble items that you can also sell separately, the usual terminology for this is
"kitting".
The Bill of Materials add-on module allows you to manage both these types of processes, and gives you special facilities for each of them. For example, when you sell a computer, you would like to show the individual components on the customer invoice, whereas when you sell a guitar, you do not wish to show these.
This module revolves around a bill of materials, which is essentially a set of instructions, or a recipe, that shows what you need in order to manufacture or assemble an inventory item. You create a bill of materials for each inventory item you manufacture.
Creating the Bill of Materials
You create a bill of materials for the inventory item you are manufacturing.
In the bill of materials, you specify the components of the item you are manufacturing. These components can be:
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Inventory items you purchase.
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Items you manufacture in a separate process. You can have as many sub-levels of manufacturing as you need.
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Service items that you use to represent non-material costs such as labour.
You specify, for each item, the quantity you need to manufacture one item. If you create service items for labour hours, the quantity you enter would be the number of hours you require of that particular labour activity.
Once you complete the bill of materials, the system can determine the cost of the item you are manufacturing by adding together the costs of the components. When you process, the system uses this cost to update the manufactured item's cost.
The system determines the quantity of each component item you require. You can produce a materials requirement report, on which you specify how many items you need to create, and you can get a list of all the components you require. If you have multiple assembly levels, you can include or exclude these in the report.