Root Run Id = this is the run id of the job that is running.
You run the job, it is assigned Run Id.
But then you run some iterations inside For Each -> those iterations get additionally their own Run Id.
So in order to make the solution work you need to check if there is an error of one of the iterations sharing the same Root Run Id (this is why the code I shared is based on the Root Run Id, and not just Run Id).