Failed to find type for field fieldName – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.1-8.9

Briefly, this error occurs when Elasticsearch is unable to identify the data type for a specific field in the index mapping. This could be due to incorrect or missing mapping definitions. To resolve this issue, you can either explicitly define the field type in the mapping or ensure that the field data is consistent so that Elasticsearch can correctly infer the type. Additionally, check for any syntax errors in your mapping definition. If the field is not necessary, consider removing it from your documents.

This guide will help you check for common problems that cause the log ” failed to find type for field [” + fieldName + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: query, index.

Log Context

Log “failed to find type for field [” + fieldName + “]” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 final MappedFieldType fieldType = context.getFieldType(fieldName);
 if (fieldType == null) {
 if (ignoreUnmapped) {
 return new MatchNoDocsQuery();
 } else {
 throw new QueryShardException(context; "failed to find type for field [" + fieldName + "]");
 return buildShapeQuery(context; fieldType);


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