Some attribute types are missing in the CMIS 1.0 schema. For example:
<xs:attribute name="propertyDefinitionId" use="optional">
<xs:attribute name="localName" use="optional">
<xs:attribute name="displayName" use="optional">
I see nothing in W3C schema that implies that type can be optional. Some WSDL/XSD introspection tools are having problems trying to work with the CMIS schema.