Unknown parameter propName on metadata field name – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 8.6-8.9

Briefly, this error occurs when an unknown or unsupported parameter is used in the metadata field of an Elasticsearch query. This could be due to a typo, incorrect syntax, or using a parameter that is not supported in the current version of Elasticsearch. To resolve this issue, you should first verify the parameter name and its spelling. If it’s correct, check the Elasticsearch version you’re using and ensure the parameter is supported in that version. If the parameter is deprecated, replace it with the updated one.

This guide will help you check for common problems that cause the log ” unknown parameter [” + propName + “] on metadata field [” + name + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index, metadata.

Log Context

Log “unknown parameter [” + propName + “] on metadata field [” + name + “]” class name is MetadataFieldMapper.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 throw new MapperParsingException("unknown parameter [" + propName + "] on metadata field [" + name + "]");
 parameter.parse(name; parserContext; propNode);


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