You can submit an ACH transaction reversal using Commercial Advantage. An ACH reversal must be submitted within 5 days of the settlement date of the original erroneous transaction. To access the ACH reversal function, locate the erroneous transaction in the completed section on the ACH Summary page. Select View for the transaction. Detailed information for the selected transaction is displayed. A Reverse option will also display. To submit a reversal, choose Reverse. If you need additional assistance, select Inquire for the transaction. Enter your question and then Send. A customer service representative will respond to your inquiry within 1 business day. If you're sending files through DES FTP transmission, simply send the reverse entry in a NACHA format. Digital Banking for business customers should contact Business Support, 866-FCB 4BIZ (866-322-4249).