it indicates whether to create discrete jobs or repetitive assemblies in Work in Process module
type attribute for components when you define an item in Item Master Organization
This attribute is controlled at the Organization level only. When you define an item in Item Master Organization, you can enter the primary subinventory from which to issue (push) or backflush (pull) an item to work in process during manufacturing.
The 'Build in WIP' item attribute determines whether an item can be manufactured in WIP as a discrete job or a repetitive assembly. The other options describe default subinventories or generic component definition attributes.