The optional AccessRestrictions Attributespecifies the AccessRestrictionsthat apply to a Node. Its data type is defined in 8.56. If a Serversupports AccessRestrictionsfor a particular Namespaceit adds the DefaultAccessRestrictions Propertyto the NamespaceMetadata Objectfor that Namespace(see Figure 8). If a particular Nodein the Namespaceneeds to override the default value the Serveradds the AccessRestrictions Attribute to the Node.

If a Serverimplements a vendor specific access restriction model for a Namespace,it does not add the DefaultAccessRestrictions Property to the NamespaceMetadata Object.