Could not parse dynamic attachments unexpected field – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch tries to parse a document with an attachment field, but encounters an unexpected field. This could be due to incorrect formatting or a mismatch in the field name. To resolve this issue, you can: 1) Check the document for any incorrect or unexpected fields and correct them. 2) Ensure that the field name in the document matches the field name in the Elasticsearch mapping. 3) If you’re using a plugin for attachments, ensure it’s correctly installed and configured.

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

Log Context

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

 } else {
 throw new ElasticsearchParseException("could not parse dynamic attachments. unexpected field [{}]"; currentFieldName);
 if (listPath == null) {
 throw new ElasticsearchParseException(
 "could not parse dynamic attachments. missing required field [{}]";


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