If purchase parts need to be acquired earlier than the replenishment times indicates, you can enter the number if days to be subtracted from the computed purchase date.
Purchase date is computed as follows:
Requirement date - delivery time as per item master - goods receipt idle time = Purchase date
Note:
The requirement date is not changed. If a purchase order is created, the requirement date is stored. "Goods receipt idle time" is then not taken into account.
See Compute order recommendation date
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