I have been using ship station since last 6 years consistently, and worked with many other apis and every one provide a separate end point for cancelling an order instead of making it complex to add un-necessary fields information to cancel an order.

Please create new end point for canceling orders like we have for mark order as shipped in API https://www.shipstation.com/docs/api/orders/mark-as-shipped/ , so we can write separate script for canceling orders to make more organized our order system.