ReadMessageProperties
Reads the properties from an ESB message into map elements.
This function is used to read the properties from ESB message into the map elements. This may be used only in the first child element under the ReadMessage function. Also, the element on which this function is specified must have a occurs maximum times of -1 and must inherit from /Builtin/Structures/Property.
This function can only be used in the IO/Database tab.