Version history

Version 1.0.0 - December 2025

This application provides a centralized reference for ACH return reason codes and the logic used to determine them, based on Nacha operating guidelines. It includes knowledge base articles outlining eligibility rules, required documentation, and timelines for each return code. Designed to support back-office and compliance teams, this tool helps streamline decision-making, ensure regulatory alignment, and reduce errors in dispute processing.