Function does not support case-(in)sensitivity – How to solve this Elasticsearch error

Opster Team

March-22, Version: 1.7-8.0

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This guide will help you check for common problems that cause the log ” Function does not support case-(in)sensitivity ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “Function [{}] does not support case-(in)sensitivity {}”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 public Function buildResolved(UnresolvedFunction uf; Configuration cfg; FunctionDefinition def) {
 if (def instanceof EqlFunctionDefinition) {
 return ((EqlFunctionDefinition) def).builder().build(uf; cfg; true);
 throw new ParsingException(uf.source(); "Function [{}] does not support case-(in)sensitivity {}"; name(); def);


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