The Reference name of a table or R Output is the name that you should use when you want to refer to that output in some R Code.
Ordinarily, the Name of an output in the Outputs tab refers to the text that you see displayed in the list of items in the Report. However, for various reasons, these names are not well suited to being used in writing code.
So, and extra Reference name is given to each output, and this name is unique.
To identify the Reference name of an output, right-click the item in the Report and select Reference name.