Could not parse http request template unexpected object field – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.15

Briefly, this error occurs when Elasticsearch encounters an unexpected field in the HTTP request template. This could be due to a typo, incorrect syntax, or a field that is not supported in the version of Elasticsearch you are using. To resolve this issue, you should first check the request template for any obvious errors. If none are found, verify that all fields are supported in your version of Elasticsearch. If the error persists, consider simplifying your request or breaking it down into smaller parts to isolate the problematic field.

This guide will help you check for common problems that cause the log ” could not parse http request template. unexpected object field [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, request, template.

Log Context

Log “could not parse http request template. unexpected object field [{}]” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } else if (token == XContentParser.Token.START_OBJECT) {
 if (HttpRequest.Field.AUTH.match(currentFieldName; parser.getDeprecationHandler())) {
 } else {
 throw new ElasticsearchParseException("could not parse http request template. unexpected object field [{}]";
 } else if (token == XContentParser.Token.VALUE_STRING) {
 if (HttpRequest.Field.SCHEME.match(currentFieldName; parser.getDeprecationHandler())) {


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