If you use the default configurations option in the database, the system imports the next user record even if the import user operation encounters an error while importing a user record. The system logs an error. Skip import of users that already exist in the database. The system schedules the import job to run immediately.
Note:
The operations, Communication Manager synchronization and bulk import of users, must not overlap in time. When bulk import of users is in progress and if Communication Manager synchronization starts, the records that are in process fail. When synchronization is complete, the remaining bulk import records process successfully. You must reimport the records that fail to import during synchronization.