SWIFT message types are the format or schema used to send messages to financial institutions on the SWIFT network. The original message types were developed by SWIFT and a subset was retrospectively made into an ISO standard, ISO 15022. In many instances, SWIFT message types between custodians follow the ISO standard. [1] This was later supplemented by a XML based version under ISO 20022.
SWIFT messages consist of five blocks of data including three headers, message content, and a trailer. Message types are crucial to identifying content.
All SWIFT messages include the literal "MT" (message type/text [2] ). This is followed by a three-digit number that denotes the message category, group and type. Consider the following two examples.
Example 1
MT304
A MT304 message is considered an "Advice/Instruction of a Third Party Deal" and it used to advise of or instruct the settlement of a third party foreign exchange deal. [3] For example, an asset manager who executed a FX transaction with a broker would send a MT304 instruction to the custodian bank of the client.
Example 2
A MT103 message is considered a "Single Customer Credit Transfer" and is used to instruct a funds transfer. [4]
The table below shows the different categories and the message type descriptions.
Category | Message type | Description | Number of message types |
---|---|---|---|
0 | MT0.. | System messages | - |
1 | MT1.. | Customer payments and cheques | 19 |
2 | MT2.. | Financial institution transfers | 18 |
3 | MT3.. | Treasury markets | 27 |
4 | MT4.. | Collection and cash letters | 17 |
5 | MT5.. | Securities Markets | 60 |
6 | MT6.. | Treasury markets – metals and syndications | 22 |
7 | MT7.. | Documentary credits and guarantees | 29 |
8 | MT8.. | Traveller's cheques | 11 |
9 | MT9.. | Cash management and customer status | 21 |
Although ISO 15022 message types are different in their structure than the SWIFT MT, the naming convention remains the same.