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ExternalMandateReason1Code

MD13 Reason Code: Incorrect Customer Authentication

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MD13 means incorrect customer authentication in the ISO 20022 mandate reason code set. There is a problem with the customer authentication

Code
MD13
ISO name
IncorrectCustomerAuthentication
Status
Registered
Last updated
2010-11-01

Official definition

There is a problem with the customer authentication

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

MD13 questions

What does MD13 mean in ISO 20022?
MD13 is Incorrect Customer Authentication in the ExternalMandateReason1Code code set: There is a problem with the customer authentication
Where does MD13 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.