Let me share some information about setting up BOM in QuickBooks Online (QBO), budi-harto.

The Bill of Materials (BOM) is a list of raw materials, sub-assemblies/components, parts, and quantities to manufacture an end product. There isn't an option to directly setting up BOM in QBO.

As a workaround, you can set this up by creating items under the Products and Services. Then, create a bundle item and bills from those items. 

Here's how:

1. Click the Gear icon in the upper-right corner. 
2. Select Products and Services.
3. Click the New button and select Inventory, Non-inventory, or Service.
4. Enter the item details. Just reach out to your accountant if you're unsure of what Income and Expense account to use.
5. Press Save and close.

Then, we can use them to create a bundle item and bills.

For more details about setting up and adding inventory items, check out these articles:

• Add inventory products in QuickBooks Online
• Set up and track your inventory in QuickBooks Online

It would best to reach out to your accountant to see if they have a different way of setting up BOM.

I've got a link here that provides you with articles about managing your business in QBO: https://quickbooks.intuit.com/learn-support/help-articles/misc/03/help-articles-sg?label=QuickBooks%....

Fill me in if you need a hand with running financial reports or any QBO related. I'll be here to help. Keep safe and healthy.

@budi-harto 

There is no assembly feature in QBO. You may need an inventory management app or a manufacturing app to integrate with your QBO.

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thank you Fiat Lux,

I am using QuickBooks Pro, when come to set the inventory item, i dont find any to set UOM (Unit of Measurement) for Stock in QuickBooks eg. kg, grams. litres, for Building of Material (BOM) - purposes)?

Why I want to set this UOM? it is because of cooking virtually purpose by using BOM eg. 1 bought 1kg chicken breast, but i only use 200 grams. How to set it in QBO?

Your tag is QB Online.

You may have  2 options:

1. Upgrade to Premier edition and pick the Manufacturing and Wholesale edition to get the feature.

2. Purchase an inventory management app to integrate with your QBD. 

If you run a restaurant business, there is a specific inventory management app for your needs.