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ExternalRejectedReason1Code

AB21 Reason Code: Invalid Settlement Agreement Number Specified

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AB21 means invalid settlement agreement number specified in the ISO 20022 rejected reason code set. Processing interbank batch settlement instruction with invalid agreement number for settlement type.

Code
AB21
ISO name
InvalidSettlementAgreementNumberSpecified
Status
Registered
Last updated
2021-08-31

Official definition

Processing interbank batch settlement instruction with invalid agreement number for settlement type.

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

Messages and fields that use ExternalRejectedReason1Code

MessageElement path
reda.058versions 001.01

AB21 in other code sets

AB21 questions

What does AB21 mean in ISO 20022?
AB21 is Invalid Settlement Agreement Number Specified in the ExternalRejectedReason1Code code set: Processing interbank batch settlement instruction with invalid agreement number for settlement type.

All ExternalRejectedReason1Code 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.