Expected NESTED FILTER FIELD getPreferredName element – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.17

Briefly, this error occurs when Elasticsearch expects a specific field (NESTED_FILTER_FIELD) in the query but it’s not provided. This could be due to a malformed query or incorrect field name. To resolve this, ensure that the field name is correct and the query is properly structured. Also, check if the field exists in the index mapping. If not, you may need to add it. Additionally, ensure that the field is of the correct type as specified in your query.

This guide will help you check for common problems that cause the log ” Expected ” + NESTED_FILTER_FIELD.getPreferredName() + ” element. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: sort, search.

Log Context

Log “Expected ” + NESTED_FILTER_FIELD.getPreferredName() + ” element.” class name is SortBuilder.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 protected static QueryBuilder parseNestedFilter(XContentParser parser) {
 try {
 return parseInnerQueryBuilder(parser);
 } catch (Exception e) {
 throw new ParsingException(parser.getTokenLocation(); "Expected " + NESTED_FILTER_FIELD.getPreferredName() + " element."; e);
 }  @FunctionalInterface
 private interface Parser> {


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