ThingWorx WebSocket-based Edge MicroServer (WS EMS) and Lua Script Resource (LSR) > Additional Configuration of WS EMS
  
Additional Configuration of WS EMS
This section describes how to configure additional options of the WS EMS.
The config.json.complete and the config.json.documented files provided in the WS EMS installation contains all possible configuration properties. To allow you to run WS EMS using config.json.complete, all of the comments have been removed from the file. Instead, config.json.documented is provided as the reference file for configuration information for all of the possible configuration properties for WS EMS.
* 
Do not attempt to use config.json.documented as is to run your WS EMS. It is intended as a reference, NOT as a valid JSON file that you can use to run WS EMS. Instead, use config.json.complete to run WS EMS, using all of the possible configuration properties.
Some properties in the config.json.complete file have default values that you may not need to change. The rest of this section describes the properties that are used most often.
* 
If you are using the Lua Script Resource (luaScriptResource.exe) to communicate with one or more local devices, you also need a config.lua in the /etc directory. This file tells the Lua process how to initialize and communicate with ThingWorx platform through the WS EMS. For more information, see Configuring a Lua Script Resource.