Failed to parse object unexpected structure – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.2

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Briefly, this error occurs when Elasticsearch encounters an unexpected data structure during parsing. This could be due to incorrect JSON formatting, mismatched data types, or missing required fields. To resolve this issue, you can: 1) Validate your JSON structure to ensure it’s correctly formatted. 2) Check the data types of your fields to ensure they match the expected types in your Elasticsearch mapping. 3) Ensure all required fields are present in your data. 4) If you’re using a custom serializer, ensure it’s correctly implemented.

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This guide will help you check for common problems that cause the log ” Failed to parse object; unexpected structure ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: rest-high-level, client.

Log Context

Log “Failed to parse object; unexpected structure” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 final Map statusMap = (Map) createdOrUpdated.get(privilegeName);
 final Object status = statusMap.get("created");
 if (status instanceof Boolean) {
 privilegeToStatus.put(privilegeName; (Boolean) status);
 } else {
 throw new ParsingException(parser.getTokenLocation(); "Failed to parse object; unexpected structure");
 } else {
 throw new ParsingException(parser.getTokenLocation(); "Failed to parse object; unexpected structure");


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