The Amazon Services Business Solutions Agreement requires that you remove all "unsuitable units" from Amazon fulfilment centres. If your inventory remains stranded, you will receive an email notification from Amazon.
Stranded inventory units with active offers will not be automatically removed. The following stranded reasons are not subject to required removals at this time:
If you require more time to fix stranded inventory for select listings, you may select Delay removal 30 days on Fix stranded inventory for each listing to provide an additional 30 days before automatic removal.
Follow these guidelines to avoid the stranded inventory issues:
If there is lost inventory at the fulfilment centre, or if there are customer returns of an item, without an active offer, this inventory will be stranded.
If the quantity column is populated on Bulk Upload template (e.g., Listing Loader), listings will change from Fulfilled by Amazon to Fulfilled by Merchant automatically, which strands your inventory.
When you create a new or revise an existing listing, make sure the ASIN, SKU, and condition are the same as the inventory in your stranded inventory list. Include all vital information for a listing before sending a shipment, including the brand, category, price, and condition.