| 1 | New The data is to be processed as new. |
| 2 | Add and replace The data contains new objects, which are to be added, and existing objects, which are to replace objects which have the same identifier. |
| 3 | Replace The data is to replace existing data which has the same identifier. |
| 4 | Delete The data identified is to be deleted. |
| 5 | None The data is not to be maintained. |
| 6 | Addition Maintenance operation involves addition. |
| 7 | Change Maintenance operation involves change. |
| 8 | Marked for deletion The item is marked for deletion in a future release. |