ISO 20022 · External code set

Channel codes

Specifies the external submission or presentation channel 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.

13 registered codesSource release: August 2026 (v3)

Registered codes in `ExternalChannel1Code`. Select a code for its full definition and source details.
Code	Published name and definition
`COUR`	Courier Delivery by courier.
`EMAL`	Email Transmission by e-mail.
`FAXI`	Fax Transmission by fax.
`MESS`	Messenger Delivery by messenger.
`POST`	Post Delivery by postal service.
`REGM`	Registered Mail Delivery by registered mail services.
`SEMA`	Secure Email Transfer via secure e-mail.
`SWFA`	SWIFT Net File Act Transmission by SWIFTNet FileAct.
`SWIA`	SWIFT Net Inter Act Transmission by SWIFTNet InterAct.
`SWMT`	SWIFTMT Transmission by SWIFT (FIN).
`SWMX`	SWIFTMX Transmission by SWIFTNet.
`TELE`	Telecommunication Transmission by telecommunications service.
`WEBM`	Web Upload Download Available via Web upload/download

Message references 8

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

tsrv.007.001.01Undertaking Amendment Notification V01
tsin.005.001.01Undertaking Application V01
tsrv.001.001.01Undertaking Issuance V01
tsrv.006.001.01Undertaking Amendment Advice V01
tsrv.003.001.01Undertaking Issuance Notification V01
tsrv.005.001.01Undertaking Amendment V01
tsrv.004.001.01Undertaking Amendment Request V01
tsrv.002.001.01Undertaking Issuance Advice V01

Source: UsageInMsgs sheet in 2Q2026_externalcodesets_v3.xlsx.