Electronic Publication: This tool contains a series of ODFI Audit checklists providing an efficient tool for ODFIs to gauge their Originators/Third-Party Senders understanding and compliance with the ACH Rules. These checklists can be completed by financial institution staff or sent to the Originator and/or Third-Party to complete on its own and then return to the ODFI. Each Audit Checklist is a fillable PDF form for each type of ACH application. Complete or send the forms that are specific to the ACH services your institution originates.