Your Item May Not Actually Be Missing
The Inventory tab allows you to narrow down the inventory being displayed.
Depending on the filters selected, some products may be excluded from your current view even though they still exist in AccelerList.
Check Your Fulfillment Filter
One of the first things to check is whether you're viewing:
FBA inventory
MFN inventory
All inventory
An item you expect to find under FBA may currently be categorized as MFN based on the information received from Amazon.
Check the Quantity Filter
If your inventory view is configured to display only items with a quantity greater than zero, listings with 0 quantity won't appear.
Try changing the filter to All or otherwise including zero-quantity inventory.
Check Other Filters
Also review any filters related to:
Listing status
Marketplace
Active/inactive status
Quantity
Fulfillment method
Try clearing your filters and searching directly for the SKU or ASIN.
Still Can't Find the Item?
If the item cannot be found even with the filters cleared, verify it directly in Seller Central.
If Amazon shows the item correctly but AccelerList doesn't, contact Support with an example ASIN and SKU.