What does AC04 mean in ISO 20022?

AC04 is Closed Account Number in the ExternalMandateReason1Code code set: Account number specified has been closed on the Receiver's books

Where does AC04 appear in a message?

For example in pain.010, element UndrlygAmdmntDtls/AmdmntRsn/Rsn/Cd.

ExternalMandateReason1Code

AC04 Reason Code: Closed Account Number

Written and maintained by ZagTrader. Last reviewed 21 October 2026. How this page is sourced and checked

AC04 means closed account number in the ISO 20022 mandate reason code set. Account number specified has been closed on the Receiver's books

Code: AC04
ISO name: ClosedAccountNumber
Status: Registered
Last updated: 2010-11-01

Official definition

Account number specified has been closed on the Receiver's books

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

Messages and fields that use ExternalMandateReason1Code

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

AC04 in other code sets

AC04 questions

What does AC04 mean in ISO 20022?: AC04 is Closed Account Number in the ExternalMandateReason1Code code set: Account number specified has been closed on the Receiver's books
Where does AC04 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.