The client can use REST services in the attribute collection service to GET session and behavior attributes.
FBTRBA079E The attribute collection service GET method is not enabled.
The GET method is not enabled by default. To enable specific clients to GET attributes from the attribute collection service, you must add their corresponding host names to the attributeCollection.getAttributesAllowedClients property. If the administrator does not set this property, any client can GET attributes from the attribute collection service.