A new Item Performance Report to provide insights into your catalog's performance is now available through API. The Item Performance report will give you a high-level, daily snapshot view of your catalog for a number of metrics. These insights and details can be used to improve your assortment and profitability and help to grow your business.
Some of the metrics available through the report are: GMV, Commission, AUR, Authorized Orders, Authorized Sales, Cancelled Sales, Item Conversion Rate and Total Product Visits
You can fetch data for the last 30 days through this report.
Item Performance Report URL – https://marketplace.walmartapis.com/v3/getReport?type=itemPerformance
Refer our documentation here for more details on the report.