The Out of Stock with Sales report lists all products with sales for the date range selected, but are currently out of stock. Any item out of stock with sales needs a closer look to determine what action needs to be taken. You should periodically run this report to determine if products on the report need to be ordered from your supplier.
This report takes into account both the MFN (Merchant) and AFN (FBA) quantities using the QtyTOT field in the products table. Products will only appear on this report when both quantities are 0 (QtyTOT is also 0). Products with a FBA quantity > 0 for are excluded from this report because you can still fulfill MFN order via a non-Amazon fulfillment (NAF) so it is not out of stock. Products will only appear on this report when those conditions are met for the date range and other filter options selected via the data filters.