Clause D.1 defines the XML Schema for all DataTypes and Messages defined in the OPC UA namespace
The XML Schema released with this version of this document can be found here:
https://reference.opcfoundation.org/files/Opc.Ua.Types.xsd?u=http://opcfoundation.org/UA/&v=1.05.03
NOTE The latest file that is compatible with this version of this document can be found here:
https://reference.opcfoundation.org/files/Opc.Ua.Types.xsd?u=http://opcfoundation.org/UA/