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ISO 20022 Academy

ISO 20022 Academy

ISO 20022 glossary

Mod-97 Checksum

The ISO 7064 division-by-97 test behind IBAN check digits: a valid IBAN, rearranged and read as one big number, leaves remainder 1.

ISO 20022 Academy

The best place on the internet to understand, explore, and experiment with ISO 20022.

This started as my own study notes — one person trying to make sense of a standard everyone said to “just read the spec” for. It grew into the resource I wish someone had handed me on day one. If it helps you, that's the entire reward. — Revanth Sai Rayapati

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ISO 20022 Academy · An interactive academy for how money moves · © 2026