title: Ldap filter for attribute that may not exist
body: <p>I have a problem with adding filter for attribute, which exist not in all members of organization unit.
  I set filter like this^
      (status=Active)
  But this property doesn't exist in half of members and server returns "unwilling to execute 53 error".
  I wonder how should I rewrite this filter query to make it work only for objects with this attribute?
  Thanks</p>