July 2025: On the Wire - ISO® 20022 Newsletter
The ISO 20022 migration is this weekend!

Keep up the pace for July 14
As previously announced, Federal Reserve Financial Services (FRFS) will begin migration activities to implement the ISO 20022 message format for the Fedwire® Funds Service during the July 12-13, 2025, weekend. Friday, July 11 will be the last day that the current format (i.e., Fedwire Application Interface Manual (FAIM) version 3.0.7) will be supported by the Fedwire Funds Service. After the Fedwire Funds Service closes at 7 p.m. ET, the current format will no longer work and any FAIM-formatted messages you send will not be accepted and will be deleted during the migration weekend.
What can you do?
Between now and the service close on July 11, ensure that you review all the action items outlined in the curated preparedness checklist below that best applies to your institution:
- FedLine Direct® customer or service provider with own connection (PDF)
- FedLine Direct customer using a service provider (PDF)
- FedLine Advantage® import/export user (primary/backup) of FedPayments® Manager – Funds (PDF)
- FedLine Advantage manual entry and template user of FedPayments Manager – Funds (PDF)
- ISO 20022 Customer Implementation Playbook for FedLine Advantage customers posted in FedLine® Home Training Page
Important Note: We highly recommend that you continue to test in the DIT2 all the way up to the migration weekend. If you have issues after the migration weekend, the Support Center may prioritize support for customers that have tested in the DIT2 environment.
Please contact us or the Support Center with any questions.

Have you finalized your preparedness and contingency plans?
All customers should test sending and receiving ISO 20022 messages in the DIT2 environment. It is highly critical that you have a contingency plan in the event that you are unable to send or receive ISO 20022 messages through the Fedwire Funds Service.
Customers should review the following steps to prepare for the upcoming July 14 migration:
- Review the training materials available in the “Help” link as shown below: FedLine Advantage Training, Templates Mapping Guide, Customer Implementation Playbook and Known Issues List

- Refer to our FAQ page on the Fedwire Funds Service ISO 20022 Implementation Center

DIT/DIT2 testing support post-ISO 20022 go-live
Post-ISO 20022 migration, the two DIT test environments will be configured as described below:
- The DIT environment will continue to serve as the production-like environment for the Fedwire Funds Service.
- The DIT2 environment will host future enhancements for the Fedwire Funds Service. (See article below on fast-follower release.)
- During the month of August, the DIT environment will support testing of the production ISO 20022 software version (replacing the FAIM version) and the DIT2 environment will support the fast follower release as described above. Please contact our Wholesale Testing Services with any questions.
Please note: The DIT2 environment will be on an adjusted schedule for the first week of production (i.e., July 14-18). For additional details, please refer to our Quick Reference Guide available on the public page on the MyStandards® portal.

Fedwire Funds Service fast follower release
We intend to implement a fast follower release during the latter half of Q4 2025 to address known issues in the FedPayments Manager – Funds application via the FedLine Advantage Solution and add a few enhancements for the FedLine Direct Solution. Please review the following documents for additional details:
- New FedPayments Manager – Funds Known Issues List added to the “Help” link within the FedPayments Manager – Funds application.
- New chapter on FedLine Direct enhancements added to the Fedwire Funds Service ISO 20022 Quick Reference Guide (June 2025) posted on the public page in the MyStandards portal.

End-of-day accounting files and end-of-minute report
With the adoption of the ISO 20022 format on July 14 the Financial Institution Reconcilement Data (FIRD) Files, Statement of Account Spreadsheet Files (SASF) and the Transaction End-of-Minute (EOM) Detail Report will be updated to accommodate changes to support ISO 20022 message standards for customers that subscribe to the Fedwire Funds Service details. File modification details were previously communicated to impacted customers. Please share this information with your operational and technical staff that reconcile end-of-day files. If you have any questions, please contact National Accounting and Customer Support.

More information
We are here to help you! Please contact us, your relationship manager or Wholesale Testing Services with any questions you have about this newsletter or the ISO 20022 migration.
Be sure to bookmark the Fedwire Funds Service ISO 20022 Implementation Center so you have access to the latest information about ISO 20022.