Payments may fail at the Destination IPS, despite the pre-validation checks. For example, messages could get lost or arrive late, the Destination Liquidity Provider may have sufficient liquidity. In cases where the Account Validation process is unable to confirm the status of the Recipient’s account, the account may turn out to be dormant or frozen. All these reasons are rare but still need to be handled by the service. All these scenarios lead to a reverse of the original leg, which is shown in the flow below.