Illegal property in graph definition – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when there’s an invalid or unrecognized property in the graph definition of an Elasticsearch query. This could be due to a typo, incorrect syntax, or use of a property that doesn’t exist. To resolve this issue, you should first verify the property names and their syntax in your graph definition. Ensure they are spelled correctly and are valid properties for the graph. If the error persists, check the Elasticsearch documentation for the correct usage of properties in a graph definition.

This guide will help you check for common problems that cause the log ” Illegal property in graph definition ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: rest, plugin.

Log Context

Log “Illegal property in graph definition” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } else {
 throw new ElasticsearchParseException("Illegal object property in graph definition " + fieldName;;  }
 } else {
 throw new ElasticsearchParseException("Illegal property in graph definition " + fieldName;;
 }  private void parseVertices(XContentParser parser; Hop currentHop) throws IOException {