| Platform SDK: Exchange Server |
The PR_EMS_AB_USN_SOURCE property contains the PR_EMS_AB_USN_CHANGED property that the object had on the server from which it was replicated.
| Header file: | EMSABTAG.H |
| Applies to: | All directory objects. These objects appear to MAPI as messaging_user objects, which are accessible through the MAPI IMailUser interface. |
| Identifier: | 0x8157 |
| Property type: | PT_LONG |
| Access: | Read-only |
When an object is replicated to a new server, the source object's PR_EMS_AB_USN_CHANGED property is copied to the destination object's PR_EMS_AB_USN_SOURCE property. The destination object's PR_EMS_AB_USN_CREATED and PR_EMS_AB_USN_CHANGED properties are set using the destination server's USN counter, as though the object had been created or modified on the destination server.