ISO 20022 · Payment modification rejection

UM21Unable To Modify Submit Cancellation

Registered in sourceSource release: August 2026 (v3)

Published definition

Modification is not possible and the cancellation is requested.

Code set and usage

Payment modification rejection contains 28 registered codes. Its exact identifier is ExternalPaymentModificationRejection1Code.

Specifies the reason for the rejection of a modification, as published in an external payment modification rejection code set. External code sets can be downloaded from www.iso20022.org.

Use the code with the applicable message version and implementation guide. A matching code value alone does not establish the same meaning in another set.

View 7 published message references