Unsupported field ” + fieldName + ” – Elasticsearch Error How To Solve Related Issues

Unsupported field ” + fieldName + ” – 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 “unsupported field ” + fieldName + “” 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: plugin.

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”unsupported field [” + fieldName + “]”classname  is BasicAuth.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (Field.USERNAME.getPreferredName().equals(fieldName)) {
  username = parser.text();
  } else if (Field.PASSWORD.getPreferredName().equals(fieldName)) {
  password = WatcherXContentParser.secretOrNull(parser);
  } else {
  throw new ElasticsearchParseException("unsupported field [" + fieldName + "]");
  } else {
  throw new ElasticsearchParseException("unsupported token [" + token + "]");


Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 Elasticsearch : Root mapping definition has unsupported parameters index : not_analyzed -views 86,697 ,score 72

Elasticsearch fielddata unsupported while index mapping -views   2,292,score 2



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