The GMS Information Model is identified by the following URI:
http://opcfoundation.org/UA/GMS/
Documentation for the NamespaceUri can be found here.
The NodeSet associated with this version of specification can be found here:
https://reference.opcfoundation.org/nodesets/?u=http://opcfoundation.org/UA/GMS/&v=1.0.0&i=1
The NodeSet associated with the latest version of the specification can be found here:
https://reference.opcfoundation.org/nodesets/?u=http://opcfoundation.org/UA/GMS/&i=1
The supplementary files associated with this version of specification can be found here:
https://reference.opcfoundation.org/nodesets/?u=http://opcfoundation.org/UA/GMS/&v=1.0.0&i=2
The supplementary files associated with the latest version of the specification can be found here:
https://reference.opcfoundation.org/nodesets/?u=http://opcfoundation.org/UA/GMS/&i=2
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