get https://marketplace.walmartapis.com/v3/items/
Use this API endpoint 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, which returns true if the item is a duplicate; otherwise, false. This field is omitted when productIdType is SKU.
You can optionally include the includeCustomerFavoritesStatus parameter to return an isCustomerFavorite flag, which indicates whether the item is currently favored by customers.
Throttling:
The default rate limit is 300 transactions per minute (TPM) per seller. If you use showDuplicateItemDetails, includeCustomerFavoritesStatus, or both, the limit is reduced to 60 TPM.