Hello all.
I am trying to make a workflow that has 6 columns, but at the beginning it will start with two or three, but my summarize tool is configured with all 6 columns already. Due to that, it does not run because a few columns do not exist yet.

In the example we can have Failed, Blocked and N/A as well, but they might only appear later on. Is there any way for the summarize tool not stop working and put those columns as "0" just to not stop the workflow? There is a JOIN tool afterwards with the same problem.
Any ideas?
Thanks!