To spot ASIN-level limits before you slam into 2026 cubic‑foot caps, you want to combine what you see in Seller Central with how you model it yourself. Amazon brought back ASIN restock limits and typically caps each product around a 90‑day supply, even if your overall account capacity looks fine.
Start in the Capacity Monitor and Restock Limits views in Seller Central to see account‑level cubic‑foot usage, then drill down into Restock Limits by ASIN to check each SKU’s “maximum shipment quantity” versus its current on‑hand, inbound, and planned units. Export these to a spreadsheet, add your own cubic‑foot per unit (from product dimensions), and calculate: current units×cu ft per unit.
Compare that to the ASIN max; anything at 80–90% of that number is a red‑flag SKU you should slow down or divert to FBM/AWD before Amazon forces removals.