Import Data Types into the Data Type Repository
You can use the Import Data Types into Data Type Repository pushbutton to import the entire message configuration as a single structured data type into the PCo data type repository, so that in future you only have to define a single root variable of the type structured data type. (See also: Functions in the Import Data Types Dialog Box.)
The Select Data Type pushbutton takes you to the PCo data type repository, where you can select the relevant previously imported structured data type. In this case, the input of the root parameter as the only input parameter is sufficient to convert JSON files and pass them as a data structure to an MQTT broker.