| Event Id | 23001 |
| Source | MSExchangeMig |
| Description | A value for one or more of the following required attributes was not defined in the ADSI Migration initialization file (mlmigad.ini): ADSI_ObjectClass, ADSI_UserID, ADSI_EmailAddress. |
| Event Information | Migration Wizard migrates directory objects and their attributes according to the ADSI schema mapping file (Mlmigad.ini), which is stored in the Exchsrvr\Bin folder. All of the attributes in the message text must be present in the file. Verify that the attributes exist in the file and are correct. |
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