This is a URI defined in the Service Modeling Language, Version 1.1 2007-09-26 specification.
This document describes the Service Modeling Language, Version 1.1 namespaces. It also contains a directory of links to these related resources, using Resource Directory Description Language.
http://www.w3.org/2007/26/sml-schema.xsd
http://www.w3.org/2007/26/sml-err-schema.xsd
Comments on this document may be sent to the public public-sml@w3.org mailing list (public archive).