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ExternalMandateReason1Code

MD12 Reason Code: Not Unique Mandate Reference

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MD12 means not unique mandate reference in the ISO 20022 mandate reason code set. Mandate identification is not unique to the creditor

Code
MD12
ISO name
NotUniqueMandateReference
Status
Registered
Last updated
2010-11-01

Official definition

Mandate identification is not unique to the creditor

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

Messages and fields that use ExternalMandateReason1Code

MessageElement path
pain.010UndrlygAmdmntDtls/AmdmntRsn/Rsn/Cd
pain.011UndrlygCxlDtls/CxlRsn/Rsn/Cd
pain.012UndrlygAccptncDtls/AccptncRslt/RjctRsn/Cd

MD12 questions

What does MD12 mean in ISO 20022?
MD12 is Not Unique Mandate Reference in the ExternalMandateReason1Code code set: Mandate identification is not unique to the creditor
Where does MD12 appear in a message?
For example in pain.010, element UndrlygAmdmntDtls/AmdmntRsn/Rsn/Cd.

All ExternalMandateReason1Code 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.