Admin APIAPI ReferenceOrders & CartsOrder Item SurchargeCreate an order item surchargeVersion: X-Cart 5.6.0Create an order item surcharge POST /api/orders/:order_id/items/:item_id/surcharges Creates a Order Item Surcharge resource. Request Responses201400401422500Order Item Surcharge resource createdInvalid inputUnauthorizedUnprocessable entityInternal error