A reversal is the depository action related to outbound payouts or refunds.
For example, if you initiate a refund today, Payload will 'reverse' funds from your bank account to fund the refund to your customer.
If you initiate a payout to your customer today, Payload will 'reverse' funds from your bank account to fund the payment to your customer.
In other words, reversal is our term for debiting your account when you initiate payments or refunds to your customers.