This 4th Edition update provides a review of the variations in legal requirements and processing obligations relating to the origination of ACH entries when a Third-Party Sender is involved in the origination of transactions through the ACH Network. This edition reflects the latest Nacha Operating Rules changes, offers real-world examples of Third-Party Sender relationships, and includes sound business practices, risk management topics and a checklist of issues to be addressed by ODFIs, Originators, and Third-Party Senders in processing agreements. Third-Party Senders and ODFIs partnering with and managing these organizations will benefit from the information discussed.