Inventory management can make or break sellers. Good inventory management has been known to reduce costs, scale profitability, and improve business growth for FBA sellers. Healthy inventory management can also help your products be received and delivered to customers more quickly.

What is Amazon IPI?

“ASIN-level quantity limits are not a new strategy from Amazon. Amazon first established limits in March of this year to manage inventory as a result of COVID impact and is now re-introducing limits to help manage inventory leading into peak season. Applicable quantity limits can be seen on the Restock Inventory page. Affected ASINs will have a ‘Limited restock’ tag along with maximum inventory limits listed under Days of Supply. Sellers should review limits in conjunction with their FBA shipment planning,” Russo says.

Seeking to improve your Amazon IPI? Contact one of our experts today to learn more.

Excess inventory percentage is the result of carrying too much inventory. This decreases profitability due to storage fees and holding costs and therefore you should be sure that you’re tracking your excess inventory percentage regularly in order to maximize profitability. – Mark Russo, Marketplace Operations Specialist at Tinuiti  FBA sell-through rate is calculated by taking your units sold and shipped over the past 90 days and dividing that number by the average number of units available at fulfillment centers during that time period. You can improve sell-through by creating or adjusting your advertising strategy, by creating a sale, by auditing the product detail page, or by removing some of your inventory.
FBA in-stock rate is the percentage of time your replenishable FBA ASINs have been in stock during the previous 30 days, weighted by the number of units sold for each SKU in the prior 60 days. When an ASIN is out of stock you should flag that ASIN as non-replenishable in the Restock tool.

How to Measure Amazon’s Inventory Performance Index

Now sellers below 450 will be subject to inventory limits effective. The majority of sellers will not be impacted by this change and most sellers with IPI scores below 450 will have more storage space than last year.
To create a removal order, please visit Inventory Age and choose Create removal order from the menu next to any FBA item in your inventory.
Pro-tip: According to our experts, the potential upswing in COVID-19 cases may cause capacity restraints for the amount of inventory Amazon will hold. According to our experts, moving ahead, a diversified fulfillment strategy of FBA and FBM is clearly the key to mitigating risk in 2021.

Amazon Updates IPI Threshold [2021]

Last year, Amazon changed the Inventory Performance Index (“IPI”) minimum threshold requirement to 500 and introduced ASIN-level quantity limits on products in FBA. That requirement was changed again at the beginning of 2021. 
“Sellers should regularly monitor their Inventory Performance Dashboard and its accompanying influencing factors to ensure they are making the best use of their allotted storage space and to reduce their storage costs”.
Stranded Inventory percentage is inventory that is not available for purchase due to a listing problem that has resulted in inventory without an associated active offer. Amazon provides a “Fix listing” option which goes on to detail the exact reason that your inventory has been stranded and provides you with the steps to resolve the issue.
According to Amazon, the Inventory Performance Index (IPI) measures inventory management over time, including how well you balance inventory levels and sales, fix listing problems that make your inventory unavailable for purchase and keep popular products in stock.

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