Alternative Item
Alternative items serve as a substitute for the standard item when the standard item cannot be delivered or is being replaced. If several items can be substituted for a standard item, you can assign a priority code to each alternative item.
You can specify alternative items for the components in an item breakdown under different parent items. You can select the correct alternative item based on the parent item
When you delete an item breakdown relation then the corresponding alternative items are also deleted. However, when there is a change in the item breakdown then the corresponding item in the alternative items must also be updated.