How many offers can be created for a specific sku (inventoryItem) ?
I tried to create multiple offers for a single inventory item and got back an error that there is already an offer for this item. I would there like to know if there is a limit of one offer per inventoryItem? Or is there a unique key (ie sku+marketplaceId) for which only one offer can be created? In that can what is the unique key for which there is a limit of one offer ?