Unknown field found – Elasticsearch Error How To Solve Related Issues

Unknown field found – Elasticsearch Error How To Solve Related Issues

Updated: July-20

Elasticsearch Version: 1.7-8.0


Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up  which can resolve issues causing many errors 


This guide will help you check for common problems that cause the log “unknown field found” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: .

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to discover the cause of many errors and provides suitable actionable recommendations (free tool that requires no installation). 

Log Context

Log”unknown field found”classname  is XContentParserUtils.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

throw new ParsingException(parser.getTokenLocation(); String.format(Locale.ROOT; message; fieldName; currentName));
  * @throws ParsingException with a "unknown field found" reason
  public static void throwUnknownField(String field; XContentLocation location) {
  String message = "Failed to parse object: unknown field [%s] found";
  throw new ParsingException(location; String.format(Locale.ROOT; message; field));

Find Configuration Errors

Try The Tool