I've been having an issue with a few fields that have the "No cached mapping for this ...." warning message. I asked about this issue in the logstash (I wanted to make sure the config wasn't the problem) forum and was told to check here.
I'm using the information from this site, and everything is working expect for a few fields. https://www.syspanda.com/index.php/2018/05/03/monitoring-active-directory-elk/
I've refreshed the Index Patterns multiple times to no avail. However upon some research I did see some information about nesting, I'm sure if that my issue here or not.