How money moves on this rail, in 12 sourced records: what is final, what can be returned, recalled or refunded, who decides, and what the limits are. A profile belongs to the rulebook, so no reason code list is published on this page.
On a rail fact, every detail line names the section or instrument it rests on and whether that is a rule, a law, operator guidance, or observed practice.
Not yet covered: reason and error code lists: Operating Procedures Appendix D is redacted as confidential, and the ISO 20022 message specifications that hold the permitted codes per message are on MyStandards and FedNow DevRel behind logins; only 9 codes are public (FRAD, WNTB, FR01, F002, F101, F008, F009, AG09, NARR); Operating Procedures sections 10.4 account activity thresholds, 10.5 Network Intelligence, 11 fraud reporting, Appendix E test cases and Appendix G service level expectations are redacted in the public version; count of live FedNow participants not taken: the lists are spreadsheets and the routing number list is offered under an access acknowledgement; Article 4A as set out in Regulation J appendix A not read section by section; every 4A section named in the liability, recall and finality facts is cited as Regulation J or Operating Circular 8 cites it; Operating Circular 1 (accounts, Account Holder eligibility) and Operating Circular 5 (general financial service provisions, security procedures) not read; the Board's 2026-04-10 Regulation J proposal on intermediaries (91 FR 18330) is still a proposal: the Federal Register lists no final rule as of 2026-09-18; the limits fact does not yet carry the 2025-11-12 start date of the 10,000,000 dollar network maximum, which a Federal Reserve Financial Services announcement of that date gives.