I am trying to do a bulk import in Unity and getting the following errors for three users only. The users are definitely in AD with mailbox. Run DBWalker but no errors

The following LDAP query did not return any matches:

(&(homeMDB=*)(objectClass=user)(mailnickname=dkeogh)(!ciscoEcsbuUMLocationObjectId=*))

Some reasons why this might happen:

1) The account does not exist in the directory.

2) The account does not exist in the selected container or any of its sub-containers.

3) The account exists but is already associated with a Unity subscriber.

4) For a user account, the account exists but does not have a mailbox.

5) For a contact, the account exists but does not have an email address.