Whats the difference between a MUG (Message Usage Guide) and a MIG (Message Implementation Guide)?
A MUG is an ISO 20022 document that complements the ISO 20022 Message Definition Report (MDR) when there is a need for further explanation about how to use the message definition(s) in compliance with the standard. MDRs and MUGs are published in the Catalogue of ISO 20022 messages. A MIG is a document describing the specific way of using ISO 20022 message(s) in a particular context, usually by a specific community of users. MIGs are not official ISO 20022 documents. There is one MUG per message definition while there can be many MIGs. All MIGs are expected to fully comply with the related MDR and MUG.
