| 4 | Change | Message containing items to be replaced at the Header and Line level. |
| 5 | Replace | Message replacing a previous message. |
| 9 | Original | Initial transmission related to a given transaction |
| 20 | Replace heading section only | Replace heading section only |
| 21 | Replace item detail and summary only | Message to replace item detail and summary of a previous message. |
| 50 | Withdraw | Message withdrawing a previously approved message. |
