The Amendments API feature allows you to make changes to booked but unsettled conversions. Currently, the only supported amendment type is a full cancellation.
You can create a cancellation to cancel a booked but unsettled conversion. This is possible prior to the conversion’s due date. You cannot amend conversions that will be settled within 5 minutes. This feature is currently only available for post-funded transactions.
When you submit a cancellation, Airwallex prices an offsetting trade in the reverse direction of the original conversion, flipping the buy and sell currencies while keeping the dealt amount, and uses this to cancel the original conversion. The original conversion will be canceled immediately.
A cancellation delta is applicable in the event that the market rate has moved from the rate of the original conversion. This delta will be calculated as the difference between the non-specified amounts in the original conversion and the priced offsetting trade. This delta will usually be negative and will be charged as a fee to your wallet.