MTI - Message Type IDs
| ID | Message Type |
|---|
| 0100 | "Authorization", "Balance Inquiry" request |
| 0101 | 0100 request repeat |
| 0110 | 0100 request response |
| 0200 | "Purchase/Credit/Chancel", "Cancel Authorization", "Refund", "Utility Payment" request |
| 0201 | 0200 request repeat |
| 0210 | 0200 request response |
| 0220 | "Cancel Advice", "Authorization Confirmation" advice |
| 0221 | 0220 advice repeat |
| 0230 | 0220 advice response |
| 0420 | "Reversal" advice |
| 0430 | "Reversal" advice response |
|