ISO 20022 · External code set

Undertaking amount type codes

Specifies the external undertaking amount type code in the format of a character string with a maximum length of 4 characters. The list of valid codes is an external code list published separately. External code sets can be downloaded from www.iso20022.org.

2 registered codesSource release: August 2026 (v3)Source details

Code setExternalUndertakingAmountType1Code

Registered codes in `ExternalUndertakingAmountType1Code`. Select a code for its full definition and source details.
Code	Published name and definition
`INCR`	Increase Amount is an increase.
`REDC`	Reduction Amount is a reduction.

Message references 1

Versions listed in the source workbook, including older versions. This list does not establish which messages a bank, network or provider supports.

tsrv.019.001.01Undertaking Status Report V01

Source: UsageInMsgs sheet in 2Q2026_externalcodesets_v3.xlsx.