From ACH Tools:
ACH File Pro is our advanced ACH file utility for viewing, editing, printing, searching, creating and validating ACH files. It helps you detect errors in your files before they are sent to an ACH operator. With an Internet connection you can periodically download the complete FedACH directory and search/print details of ACH participant banks. Our comprehensive rules engine also validates RDFI ABA numbers within the file ensuring that they are valid ACH participants. ACH File Pro gives users the ability to create Batches for Originations, Returns, Dishonored Returns, Contested Dishonored Return, Notification of Change and Refused Notification of change.