| An addition to a request already made | OLI_TRANS_MODE_ADD | 3 |
| Cancel request already made. Delete the transaction before processing it | OLI_TRANS_MODE_CANCEL | 6 |
| Full replacement to request already made. Process This transaction rather than the one
originally sent. | OLI_TRANS_MODE_REPLACE | 4 |
| Original request. Sent by sender. | OLI_TRANS_MODE_ORIGINAL | 2 |
| Reversal | OLI_TRANS_MODE_REVERSAL | 8 |
| should be marked as duplicate. Used if sender thought the transaction was lost. | OLI_TRANS_MODE_DUPLICATE | 7 |
| Subsequent Response | OLI_TRANS_MODE_SUBRESPONSE | 10 |
| Trial request (e.g. Trial application) Results are not saved by receiver | OLI_TRANS_MODE_TRIAL | 1 |
| Update to request already made | OLI_TRANS_MODE_UPDATE | 5 |