Fix mapping conflict

[Dmitry_Reshetnik]

I have a Kibana not owned by me.
As of now it contains 1000+ fields (generated from JSON inputs).
There are few fields which were (maybe manually configured as String), and few visualizations which used these fields.
At some moment the index fields list was refreshed, and these fields became Number. And for some time were indexed as numbers.
Now we have conflicts "The type of this field changes across indices. It is unavailable for many analysis functions."

Is there any chance to convert it to String without losing the data?

[dsnider (David Snider (Kibana Design))]

You will need to convert all the data in that specific field to a string. Once you do that you'd need to reindex that data in Kibana.

This article can you good starting point

Changing Mapping with Zero Downtime | Elastic