Hi, which version of Elasticsearch is supported in sugarcrm version 7.9?
1.7.5 is supported in 188.8.131.52, per our supported plaforms page- http://support.sugarcrm.com/Resources/Supported_Platforms/Sugar_7.9.x_Supported_Platforms/
SugarCRM | Sr. Community Manager
Minimum Supported version is 1.7.5.
For more details please watch this webinar video or read the article in link below.