| Platform SDK: Exchange Server |
The PR_EMS_AB_EXTENSION_DATA property contains a list of data sections specific to an extension.
| 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: | 0x80a8 |
| Property type: | PT_MV_BINARY |
| Access: | Read/write |
The PR_EMS_AB_EXTENSION_DATA property contains a list of data sections used to store configuration information to be displayed by an Administrator extension property page.
Each binary value is structured as follows:

Binary value structure
The property page can be assigned any name, but it must be unique.