Well, "automatic" refers to an automated routine that constitutes of a series of complicated steps

I don't want to give access to the full file because the file (~200 MB) contains the entire exhaustive info and data for the entire portfolio of ~300k customers - it wouldn't be a good idea that everyone can take this valuable data and handle it in ambiguous ways...

We agree on the process - however i would really need help for the part that has to do with the explicit code needed...