For select ASINs, FBA limits the number of items that you can ship to our fulfilment centres. These limits help you to avoid sending products that have high inventory levels but low customer demand. Items that have been in Amazon fulfilment centres for more than 365 days as of 15 February and 15 August each year are assessed for a semi-annual long-term storage fee.
When creating a shipping plan that contains an ASIN with a quantity limit, you cannot exceed the stated maximum quantity. ASIN quantity limits may change over time based on inventory levels and sales.