One of the responses to this question states:

'If yes, please know that in QuickBooks Desktop, when an assembly build is performed, the components are deducted from inventory and the quantity of assembly items increases accordingly.

Therefore, after creating an assembly, it will increase the Quantity of the assembly and decrease the Quantity of the inventory parts used to build the assembly.'

By 'components are deducted from inventory' is this referring to the Quantity On Hand?

 Thank you 

J Harding