After investigating an inventory alert and finding the reason for your quantity difference, you will want to adjust your replenishments depending on whether you had more or less quantity than Amazon's On Hand.
More Quantity than Amazon
If there is more inventory showing in your replenishments than your remaining On Hand from Amazon, you can click the quantity under the corresponding Replenishment Row and decrease the Purchased Qty amount so that the First In, First Out sequence will apply correctly for your orders.
If the entire replenishment needs to be removed, you can delete it by selecting the checkbox to the left of the row, then click Delete at the bottom of the page.
Less Quantity than Amazon
If there is less inventory showing in your replenishments than your remaining On Hand from Amazon, you can click the quantity under the corresponding Sort Sequence and increase the amount.
You can also add a new Replenishment Row with different accounting information by clicking 'Add Replenishment' at the bottom of the page.