When I call the List Product API, I get the following error: "Input error" This error usually appears with the line with a problem. Please revise the respective line in the json body. Related articles Product Creation "An item already created as a vendorItem cannot be deleted" Such an error will occur. Coupang OPEN API How to Submit an API Related Online Inquiry When registering a product with the API, an error "The item with the same option and option value as an item exists in duplicate" occurs.