Development
Besides the development of new message definitions, registration requests may also cover the development of variants of existing message definitions (that is, a restricted version of an existing message definition) or the development of Supplementary Data extensions of existing message definitions.
What are you willing to develop ?
Message Definitions
More information on the process for the development of new message definitions
SupplementaryData Extensions
More information on the process for the development of new SupplementaryData Extensions
Variants
More information on the process for the development of variants
Detailed registration procedures
Should you want to have more information, you can download the complete version of the ISO 20022 registration procedures