Q: Why the drop-down box is empty when I configure the traffic network analysis in service management page of SuperMap iServer.?

A: Upgrade SuperMap iServer to the latest version or configure Traffic network analysis service provider via XML file. Please reference to the help document: Start > Configuration and management > Configuration and managing GIS Services > Configuration for each layer of iServer architecture > Configuration for service provider layer > Configuring service providers through XML file > Configuring transportation analyst provider.