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Define this parameter in the request body.
[ { "$id": "2", "StateID": "2457d875-ac24-48c7-9add-8cfd3c50372b", "SavedCartID": 1, "SavedCartLineItemID": 1, "OrderID": 1, "OrderLineItemID": 1 }, { "$ref": "2" }, { "$ref": "2" } ]