Hi,
I found little but annoying error in the page
https://www.elastic.co/guide/en/elasticsearch/reference/current/mapping-date-format.html
The right format for date_time is T: yyyy-MM-dd'T'HH:mm:ss.SSSZZ and not T: yyyy- MM-dd'T'HH:mm:ss.SSSZZ.
This little space drive me crazy for an hour
Thanks