What happens when I select different options for processing negative inventory quantities?
The options for processing inventory quantities when the transaction quantity exceeds the quantity on hand are:
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Always: applies cost for the entire transaction, including negative balances. The cost processor costs the transaction as follows:
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If the cost method is perpetual average cost, it applies the average cost for the entire transaction quantity.
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If the cost method is actual cost, it applies the FIFO layer cost for the entire transaction quantity, and then processes a cost variance when the next receipt replenishes inventory.
 
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To Zero: applies cost only for quantity on hand, and holds the remaining shortfall until inventory is replenished.
 
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Never: does not apply cost for the transaction until quantity is sufficient to cover the entire transaction.