patch https://{xentralId}.xentral.biz/api/v1/salesOrders//actions/createPartialSalesOrder
This endpoint creates a partial delivery sales order for an existing sales order. The partial delivery sales order will be copied from the existing sales order without any positions and gets linked as partial delivery sales order. Adding positions to the partial delivery sales order needs to be done by using the Update existing sales order endpoint. Please pay attention to remove the positions in the original sales order or to adjust the quantities if you do not fully transfer the whole position to the partial delivery sales order.