Incorrect Inventory Numbers from Amazon Seller
This article will assist with the following problem:
Inventory numbers in an Amazon report are bloated or incorrect.
Cause
The most common cause of this problem is a missing marketplace dimension or filter. Even if you configure your account to include one country only, you will still receive data from multiple marketplaces and must filter it when you run a report.
Solution
In Data Studio
Add the Marketplace dimension to your table.
Add a Marketplace filter to your report.
In Google Sheets or Excel
Add Marketplace as a dimension.
Create a Marketplace filter in your query.