Accredited ACH Professional (AAP) Practice Exam 2025 - Free AAP Practice Questions and Study Guide

A Third-Party Sender in ACH transactions is accurately defined as a third party that serves as an intermediary between the Originator (the entity that initiates the ACH transaction) and the Originating Depository Financial Institution (ODFI), which processes the transaction. This role is essential in the ACH network, as the Third-Party Sender facilitates the movement of transactions from the Originator to the ODFI, ensuring that proper protocols and compliance standards are met throughout the process.

This definition highlights the Third-Party Sender's function in bridging the two parties, providing necessary services such as handling transactions and ensuring compliance with applicable regulations. It's important for Third-Party Senders to maintain a clear understanding of the ACH rules and regulations to effectively serve their role in the transaction process. In contrast, other options refer to different roles or functions that do not align with the definition of a Third-Party Sender.