The ACH return codes R07 - Customer Revoked Authorization and R08 - Payment Stopped signifies that the transaction was returned because the customer asked their bank to stop the payment for this transaction.
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An ACH return code R10 - Originator not Known/Not Authorized signifies that the transaction was returned because the customer/person who owns the bank account has told their bank that this debit was unauthorized. It also signifies that the bank account owner has likely signed a Written Statement of Unauthorized Debit with regard to this transaction and told their bank to not honor any further requests.