Last update timestamp for a specific field?

Elastic Stack Elasticsearch
1

I have an index with 30+ columns and different columns are updated by different process. Hence the time each column got updated is different.

So is it possible to retrieve the last update timestamp on a specific field? I'd imagine it's possible since ES has versioning but no api is available, is that true?

Much appreciated!

2

No you can't do that OOTB.
You need to add a field or fields you control by yourself.

3

OK. That's good to know. Thank you!