Re-index Issue

Elastic Stack Elasticsearch
1

Hi all.
I have a ununderstandable issue :frowning: I post data from .net application to elasticsearch-cluster.

When i send data it shows like on this screenshot

My index refresh interval is 5s. After refresing works then data shows liken on this screenshot.
Data changes to "null" values :frowning: I cant understand why this happen and only change for these 3 fields.

These screenshot is mapping :

This screenshot is .net model :

Can anyone help to me ?
Thanks.

3

Please don't post pictures of text, they are difficult to read and some people may not be even able to see them.