How ISO 20022 models the interface between a retailer's sale system and its payment terminal through the casp business area, covering the service, session, device, reconciliation, and reporting messages of the sale-to-POI protocol.
2026, Jul 17 — 7 minute read
A tour of ISO 20022's reda (reference data) business area, the messages that create, maintain, query, and report the static data behind transactions, from securities, parties, and accounts to standing settlement instructions, calendars, and prices.
2026, Jul 17 — 7 minute read
How ISO 20022 models interbank payments through the pacs business area, the flagship of the MT-to-MX migration, covering the FIToFI credit transfer, direct debit, payment status, return, and reversal messages that move money between banks.
2026, Jul 17 — 8 minute read
How ISO 20022 models card network management through the canm business area, a four-message set that keeps the link between a terminal and its acquirer host signed on, keyed, and alive so that card transactions can flow.
2026, Jul 17 — 6 minute read
How ISO 20022 models the foreign exchange post-trade process through the fxtr business area, covering trade capture, confirmation and matching, status notification, and net settlement reporting between counterparties and their matching and settlement services.
2026, Jul 17 — 8 minute read
How ISO 20022 models card fraud reporting through the cafr business area, a compact four-message set that lets card parties report fraudulent transactions and communicate their disposition in a structured, machine-readable form.
2026, Jul 17 — 8 minute read
How ISO 20022 models card fee collection through the cafc business area, a two-message request-and-response pair that collects scheme and service fees between card parties on the same protected envelope as the transaction messages.
2026, Jul 17 — 5 minute read
