I have a question regarding Missing NamespaceUri and ModelURI in NodeSet.xml (in any Companion Spec.).
As per UA Schema file and UASpec. Part 6, it is not mandatory to provide NamespaceUri and ModelURI, so , in this case, how do we handle creation of Companion Spec Type System in our AddressSpace. Which namespace URI will the Companion Spec. set to create NodeId's?
Also, I would like to know how big can be the size of Companion Spec.xml file?
There are semantic requirements which cannot be captured in the XML schema.
i.e. the core UA nodeset file is allowed to have an empty namespace URI array but no one else is.
See spec clarification: