Overview

Amazon has retired the ASIN‑specific quantity ceiling and introduced a storage‑type level restock limit at the start of 2024. The new system groups inventory into four size tiers—standard, small‑standard, large‑standard, and oversize—and assigns a single cap to each tier. Sellers must remodel their forecasting and replenishment workflows because the ability to set independent limits for individual products is no longer available.

Key Points

• Tier‑based caps — Each storage tier receives a quarterly maximum unit count, replacing the former per‑ASIN limits.
• Unified pool — All SKUs that fall into the same size tier draw from one shared inventory bucket, so a surge in one product can reduce the space available for another.
• Quarterly adjustments — Amazon revises tier caps every quarter based on fulfillment‑center capacity and seasonal demand patterns.
• Multi‑SKU impact — Brands with dozens of items in the same tier may see their total allowable inventory shrink or expand as a single block rather than as separate allowances.
• Reporting shift — The Restock Inventory tool now shows “Storage Type Limit” instead of “ASIN Limit,” requiring sellers to track a different metric.
• Inbound slot allocation — Amazon distributes inbound shipment slots proportionally across SKUs within a tier, ensuring the overall tier cap is respected.

How the Storage Type Level Restock Limit Works

1. Tier assignment — When a product is created, Amazon classifies it into standard, small‑standard, large‑standard, or oversize based on its dimensions and weight; for example, a 12‑oz coffee mug is tagged as standard‑size, while a 30‑lb bulk bag of dog food is marked oversize.
2. Quarterly cap publication — At the beginning of each quarter Amazon releases the maximum number of units allowed for each tier; for Q2 2024 the cap might be 1.5 million units for standard‑size items and 250 000 units for oversize items.
3. Single‑tier restock request — Sellers enter the total quantity they intend to send for each tier in the Restock Inventory tool, and the system validates the sum against the published cap; for instance, a request to ship 400 000 units across three different standard‑size ASINs will be approved only if the combined total stays below the standard‑size limit.