Learn how to cancel a draft order using the REST API by determining necessary variables and executing the cancel operation.

1. Determine the value of the following variables:

   Variable	Description
   $OrderNumber	The order number of the order to cancel. For example, O-00000003 .
   $CancelReason	The reason to cancel the draft order, for example, test cancel.

2. Use the Cancel an order operation to cancel the order that is in the Draft status:

{
   "cancelReason": "$CancelReason"
}