The Web Services Description Language (WSDL) Version 2.0 simple types are intended for use with the Web Services Description Language Version 2.0 (WSDL 2.0).
For a complete definition of the types, refer to Web Services Description Language (WSDL) Version 2.0 Part 1: Core Language specification.
Comments on this document have to be sent to the public public-ws-desc-comments@w3.org mailing list (public archive).