The sudoers schema in doc/schema.OpenLDAP inclues a number of `attributetype` stanzas.  However one of these (sudoOrder) is given as `attributetypes` in the file.  This causes an error if this file is mechanically translated into the .ldif appropriate for uploading to an OpenLDAP server.

As described at http://www.openldap.org/doc/admin24/schema.html the keyword is indeed expected to be `attributetype`.

Changing this in the provided schema file does indeed fix the problem.

Diff:

% diff schema.OpenLDAP{-orig,} 
64c64
< attributeTypes ( 1.3.6.1.4.1.15953.9.1.10
---
> attributeType ( 1.3.6.1.4.1.15953.9.1.10