Copy_to in multi fields is not allowed. Found the copy_to in field ” + name + ” – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” copy_to in multi fields is not allowed. Found the copy_to in field ” + name + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “copy_to in multi fields is not allowed. Found the copy_to in field [” + name + “]”classname  is TypeParsers.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

iterator.remove();
 } else if (parseMultiField(builder; name; parserContext; propName; propNode)) {
 iterator.remove();
 } else if (propName.equals("copy_to")) {
 if (parserContext.isWithinMultiField()) {
 throw new MapperParsingException("copy_to in multi fields is not allowed. Found the copy_to in field [" + name + "] " +
 "which is within a multi field.");
 } else {
 parseCopyFields(propNode; builder);
 }
 iterator.remove();

 

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