Operation and item yield are different than the component scrap percentage in product structures. Component scrap results in additional requirements for individual components of a parent item. When an item’s yield is less than 100 percent, MRP creates additional scrap requirements for the item, causing the item and all of its components to be overplanned. Depending on the manufacturing process, the percentage of a lot expected to be of acceptable quality may also fall below 100 percent.

See Scrap for a more detailed description of how the component scrap percentage is used.

The system can calculate the total yield for an item in two ways, based on the values in two item planning data fields: Yield % and Op Based Yield.