Suggester term parsing failed on currentFieldName – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to parse the field specified for the term suggester. This could be due to incorrect field name, data type mismatch, or the field not being searchable. To resolve this, ensure the field name is correct and it’s of text or keyword data type. Also, check if the field is included in the index and is searchable. If not, you may need to reindex your data with the correct mappings.

This guide will help you check for common problems that cause the log ” suggester[term] parsing failed on [” + currentFieldName + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search.

Log Context

Log “suggester[term] parsing failed on [” + currentFieldName + “]” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 "suggester[term] doesn't support field [" + currentFieldName + "]"
 } else {
 throw new ParsingException(parser.getTokenLocation(); "suggester[term] parsing failed on [" + currentFieldName + "]");
 }  // now we should have field name; check and copy fields over to the suggestion builder we return
 if (fieldname == null) {


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