How is earliest and latest start date computed for a FG?

Summary:

How is the earliest and latest start date computed for a Finished Good planned order? And how do i validate the same from the corresponding supplies/demands pegged to this finished good planned order?

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How is the earliest and latest start date computed for a Finished Good planned order? And how do i validate the same from the corresponding supplies/demands pegged to this finished good planned order?

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