The reference variant enables you to access existing cost estimates for reference purposes.
The reference variant allows you to create separate material cost estimates or costing runs, as well as sales order cost estimates and order BOM cost estimates that are based on the same quantity structure. This enables you to improve performance, or to make significant comparisons.
You specify how the data is to be transferred from an existing cost estimate (transfer control) and which items should be revaluated when transferring.
If, for example, you use multiple valuation functions in group costing , you can create material cost estimates in up to three currencies or valuations.
The reference variant ensures that the cost estimate is assigned to the legal valuation view and the other valuation views, thus serving as an entry tool.
The reference variant is also useful in cases such as the creation of inventory cost estimates.
The transfer control is used