Unregistered Aggregation ” + aggregationName + ” – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

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

This guide will help you check for common problems that cause the log ” Unregistered Aggregation ” + aggregationName + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search and aggregations.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “Unregistered Aggregation [” + aggregationName + “]”classname  is ValuesSourceRegistry.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

String fieldDescription = fieldType.typeName();
 throw new IllegalArgumentException("Field [" + fieldType.name() + "] of type [" + fieldDescription +
 "] is not supported for aggregation [" + aggregationName + "]"); }
 return supplier;
 throw new AggregationExecutionException("Unregistered Aggregation [" + aggregationName + "]");
 public AggregationUsageService getUsageService() {
 return usageService;


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