get https://marketplace.walmartapis.com/v3/items/
This API endpoint enables you to retrieve detailed information about a specific item from the partner’s catalog. You must pass productId as a path parameter and partnerId as a query parameter. The response includes an isDuplicate field, indicating whether the item is a duplicate (true or false). This field will not be available if the productIdType is SKU.
Throttling: This endpoint is throttled at a maximum of 900 transactions per minute (TPM) per seller. When called with the showDuplicateItemInfo parameter, this is reduced to 60 TPM.