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ExternalUnableToApplyIncorrectData1Code

MM20 Code: Mismatch Creditor Name Account

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MM20 means mismatch creditor name account in the ISO 20022 unable to apply incorrect data code set. Name and account of creditor are not matching.

Code
MM20
ISO name
MismatchCreditorNameAccount
Status
Registered
Last updated
2021-02-01

Official definition

Name and account of creditor are not matching.

Definition from the ISO 20022 External Code Sets, 2Q2026 (published 28 Aug 2026).

Messages and fields that use ExternalUnableToApplyIncorrectData1Code

MessageElement path
camt.026Justfn/MssngOrIncrrctInf/IncrrctInf/Tp/Cd

MM20 questions

What does MM20 mean in ISO 20022?
MM20 is Mismatch Creditor Name Account in the ExternalUnableToApplyIncorrectData1Code code set: Name and account of creditor are not matching.
Where does MM20 appear in a message?
For example in camt.026, element Justfn/MssngOrIncrrctInf/IncrrctInf/Tp/Cd.

All ExternalUnableToApplyIncorrectData1Code codes · ISO 20022 code sets

The ISO 20022 code names and definitions on this page are reproduced from material published at iso20022.org under the ISO 20022 Intellectual Property Rights policy. This is not the official source: the up-to-date ISO 20022 standards and repository material are published only at iso20022.org. Explanations in our own words are by ZagTrader. ZagTrader is not affiliated with or endorsed by ISO or Swift.