Missing suggestion object – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch tries to execute a suggest query, but the suggestion object is missing in the request. The suggestion object is essential as it defines the type of suggestion and its parameters. To resolve this issue, ensure that your suggest query includes a suggestion object with the correct syntax. Also, verify that the field you’re suggesting on is of the correct type, typically a text field. Lastly, check that the field is indexed and searchable, as Elasticsearch cannot suggest on fields that are not indexed.

This guide will help you check for common problems that cause the log ” missing suggestion object ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search.

Log Context

Log “missing suggestion object” class name is SuggestionBuilder.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } else if (token == XContentParser.Token.START_OBJECT) {
 suggestionBuilder = parser.namedObject(SuggestionBuilder.class; currentFieldName; null);
 if (suggestionBuilder == null) {
 throw new ElasticsearchParseException("missing suggestion object");
 if (suggestText != null) {
 if (prefix != null) {


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