Failed to parse multi get request unknown field – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.17

Briefly, this error occurs when Elasticsearch receives a multi get request with an unknown or incorrect field. This could be due to a typo, incorrect syntax, or a field that doesn’t exist in the index. To resolve this issue, you should first verify the field name in your request. Make sure it matches exactly with the field name in your index. If the field name is correct, check the syntax of your request. Ensure that it follows the correct format for a multi get request. If the error persists, consider reindexing your data to ensure all fields are correctly defined.

This guide will help you check for common problems that cause the log ” failed to parse multi get request. unknown field [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: request.

Log Context

Log “failed to parse multi get request. unknown field [{}]” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } else {
 throw new ElasticsearchParseException("illegal type for _source: [{}]"; token);
 } else {
 throw new ElasticsearchParseException("failed to parse multi get request. unknown field [{}]"; currentFieldName);
 } else if (token == Token.START_ARRAY) {
 if (FIELDS.match(currentFieldName; parser.getDeprecationHandler())) {
 throw new ParsingException(