This message type is used by financial institutions to send or receive information for which another message type is not applicable.
The category digit should be chosen so the message will be routed to the unit of the Receiver which is most capable of acting on the information.
| Status | Tag | Field Name | Content/Options | No. |
| M | 20 | Transaction Reference Number | 16x | 1 |
| O | 21 | Related Reference | 16x | 2 |
| M | 79 | Narrative | 35*50x | 3 |
There are no network validated rules for this message type.